<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a0020e-cb51-797f-9612-ac36a59a2679,g:bc0b2d07-ede5-4966-b1e2-899a0f8e1882-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/CoverPage" xlink:type="simple" xlink:href="nxh-20260930.xsd#CoverPage"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/CoverPage" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_01a17e7b-bb27-75c0-aa57-e73f6c3aee5b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_DocumentInformationTable_01a17e7b-bb27-75c0-aa57-e73f6c3aee5b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressesAddressTypeAxis_01a17e7b-bb27-7cfc-be5d-1ab371d7677b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressesAddressTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_01a17e7b-bb27-75c0-aa57-e73f6c3aee5b" xlink:to="loc_dei_EntityAddressesAddressTypeAxis_01a17e7b-bb27-7cfc-be5d-1ab371d7677b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AddressTypeDomain_01a17e7b-bb27-7cfc-be5d-1ab371d7677b_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AddressTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_EntityAddressesAddressTypeAxis_01a17e7b-bb27-7cfc-be5d-1ab371d7677b" xlink:to="loc_dei_AddressTypeDomain_01a17e7b-bb27-7cfc-be5d-1ab371d7677b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AddressTypeDomain_01a17e7b-bb27-7add-9287-966ae444ae0c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AddressTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_EntityAddressesAddressTypeAxis_01a17e7b-bb27-7cfc-be5d-1ab371d7677b" xlink:to="loc_dei_AddressTypeDomain_01a17e7b-bb27-7add-9287-966ae444ae0c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_FormerAddressMember_01a17e7c-106a-7617-ae83-e0c78fb5582e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_FormerAddressMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_AddressTypeDomain_01a17e7b-bb27-7add-9287-966ae444ae0c" xlink:to="loc_dei_FormerAddressMember_01a17e7c-106a-7617-ae83-e0c78fb5582e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_01a0020e-cc88-701f-a254-2f19ec4602a4" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_DocumentType_01a0020e-cc88-701f-a254-2f19ec4602a4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentQuarterlyReport_01a0020e-cc88-7c0b-b879-e2dca3f9ab5b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentQuarterlyReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_DocumentQuarterlyReport_01a0020e-cc88-7c0b-b879-e2dca3f9ab5b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_01a0020e-cc88-7b53-bf86-111341fc947a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_DocumentPeriodEndDate_01a0020e-cc88-7b53-bf86-111341fc947a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport_01a0020e-cc88-7724-b107-844e62e39454" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentTransitionReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_DocumentTransitionReport_01a0020e-cc88-7724-b107-844e62e39454" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_01a0020e-cc88-7b6d-91de-17e14f5c779e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityFileNumber_01a0020e-cc88-7b6d-91de-17e14f5c779e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_01a0020e-cc88-7473-8a61-96e3823c1588" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityRegistrantName_01a0020e-cc88-7473-8a61-96e3823c1588" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_01a0020e-cc88-7bc8-a64a-0f9e22a19d51" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityIncorporationStateCountryCode_01a0020e-cc88-7bc8-a64a-0f9e22a19d51" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_01a0020e-cc88-7199-8e9f-d32c62622446" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityTaxIdentificationNumber_01a0020e-cc88-7199-8e9f-d32c62622446" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_01a0020e-cc88-7335-bf3b-c93c5d1b0b98" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityAddressAddressLine1_01a0020e-cc88-7335-bf3b-c93c5d1b0b98" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_01a17e7c-506c-732f-8fbd-7b7238435a3c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine2"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityAddressAddressLine2_01a17e7c-506c-732f-8fbd-7b7238435a3c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_01a0020e-cc88-7432-8c09-9b358b9df2a7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityAddressCityOrTown_01a0020e-cc88-7432-8c09-9b358b9df2a7" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_01a0020e-cc88-78f2-b06d-dccd551aa7c0" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityAddressStateOrProvince_01a0020e-cc88-78f2-b06d-dccd551aa7c0" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_01a0020e-cc88-78ee-8a2a-dd8d9231b9fc" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityAddressPostalZipCode_01a0020e-cc88-78ee-8a2a-dd8d9231b9fc" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_01a0020e-cc88-761c-81eb-1ad7271b41d9" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_CityAreaCode_01a0020e-cc88-761c-81eb-1ad7271b41d9" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_01a0020e-cc88-743e-8b73-f42c7cf62a5b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_LocalPhoneNumber_01a0020e-cc88-743e-8b73-f42c7cf62a5b" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInformationFormerLegalOrRegisteredName_01a17e7d-d5eb-71d6-a60d-cc2ff8e95741" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityInformationFormerLegalOrRegisteredName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityInformationFormerLegalOrRegisteredName_01a17e7d-d5eb-71d6-a60d-cc2ff8e95741" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_01a0020e-cc88-765b-89f3-b73f19a8c0be" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_Security12bTitle_01a0020e-cc88-765b-89f3-b73f19a8c0be" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_01a0020e-cc88-7d70-82f4-77871cfa3ed1" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_TradingSymbol_01a0020e-cc88-7d70-82f4-77871cfa3ed1" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_01a0020e-cc88-7dcf-8a9a-b01998396f03" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_SecurityExchangeName_01a0020e-cc88-7dcf-8a9a-b01998396f03" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_01a0020e-cc88-7555-948c-dc1cbd6d2a6c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCurrentReportingStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityCurrentReportingStatus_01a0020e-cc88-7555-948c-dc1cbd6d2a6c" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_01a0020e-cc88-7274-ae10-2c320aa10b10" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityInteractiveDataCurrent_01a0020e-cc88-7274-ae10-2c320aa10b10" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory_01a0020e-cc88-7f6e-bd6a-a7ce77e563ea" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFilerCategory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityFilerCategory_01a0020e-cc88-7f6e-bd6a-a7ce77e563ea" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness_01a0020e-cc88-7c71-a170-d100eee765f5" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntitySmallBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntitySmallBusiness_01a0020e-cc88-7c71-a170-d100eee765f5" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_01a0020e-cc88-7985-8733-2b5ec08c7298" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityEmergingGrowthCompany_01a0020e-cc88-7985-8733-2b5ec08c7298" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany_01a0020e-cc88-7971-997a-2a7e91ef24cd" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityShellCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityShellCompany_01a0020e-cc88-7971-997a-2a7e91ef24cd" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_01a0020e-cc88-72c7-b4f8-3f60451a136a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_01a0020e-cc88-72c7-b4f8-3f60451a136a" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_01a0020e-cc88-74f4-b514-b33024eaf3b5" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_EntityCentralIndexKey_01a0020e-cc88-74f4-b514-b33024eaf3b5" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_01a0020e-cc88-7fa9-90a0-eb05065769cb" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_AmendmentFlag_01a0020e-cc88-7fa9-90a0-eb05065769cb" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_01a0020e-cc88-71f2-8f44-19bc0dd7f3d0" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_CurrentFiscalYearEndDate_01a0020e-cc88-71f2-8f44-19bc0dd7f3d0" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_01a0020e-cc88-770c-8c18-5752fa4b94fe" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_DocumentFiscalPeriodFocus_01a0020e-cc88-770c-8c18-5752fa4b94fe" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_01a0020e-cc88-7d27-8dfc-60ca4566865c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentFiscalYearFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17e7b-bb27-776a-a260-5ac8f6ebe2d3" xlink:to="loc_dei_DocumentFiscalYearFocus_01a0020e-cc88-7d27-8dfc-60ca4566865c" xlink:type="arc" order="30"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/ConsolidatedStatementsofChangesinStockholdersEquityUnaudited" xlink:type="simple" xlink:href="nxh-20260930.xsd#ConsolidatedStatementsofChangesinStockholdersEquityUnaudited"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/ConsolidatedStatementsofChangesinStockholdersEquityUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a0020e-cc88-775b-8631-7d8cb7e019f9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a0020e-cc88-7333-a50d-703cbe6f840b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a0020e-cc88-775b-8631-7d8cb7e019f9" xlink:to="loc_us-gaap_StatementTable_01a0020e-cc88-7333-a50d-703cbe6f840b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a0020e-cc88-7732-a00c-c6aa2ef69d84" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a0020e-cc88-7333-a50d-703cbe6f840b" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a0020e-cc88-7732-a00c-c6aa2ef69d84" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a0020e-cc88-7732-a00c-c6aa2ef69d84_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a0020e-cc88-7732-a00c-c6aa2ef69d84" xlink:to="loc_us-gaap_EquityComponentDomain_01a0020e-cc88-7732-a00c-c6aa2ef69d84_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a0020e-cc88-7c6d-90e4-aa65c5374c1b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a0020e-cc88-7732-a00c-c6aa2ef69d84" xlink:to="loc_us-gaap_EquityComponentDomain_01a0020e-cc88-7c6d-90e4-aa65c5374c1b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParentMember_01a0020e-cc88-7a4b-83fa-ee2ba44f5a6d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a0020e-cc88-7c6d-90e4-aa65c5374c1b" xlink:to="loc_us-gaap_ParentMember_01a0020e-cc88-7a4b-83fa-ee2ba44f5a6d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_01a0020e-cc88-750d-b1f9-e0fcf9330f8c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_01a0020e-cc88-7a4b-83fa-ee2ba44f5a6d" xlink:to="loc_us-gaap_CommonStockMember_01a0020e-cc88-750d-b1f9-e0fcf9330f8c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_01a0020e-cc88-7978-aab2-003d659fd450" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_01a0020e-cc88-7a4b-83fa-ee2ba44f5a6d" xlink:to="loc_us-gaap_TreasuryStockCommonMember_01a0020e-cc88-7978-aab2-003d659fd450" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_01a0020e-cc88-7bc2-abbd-404409bae96c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_01a0020e-cc88-7a4b-83fa-ee2ba44f5a6d" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_01a0020e-cc88-7bc2-abbd-404409bae96c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_01a0020e-cc88-78c4-b08c-766f6af2949e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_01a0020e-cc88-7a4b-83fa-ee2ba44f5a6d" xlink:to="loc_us-gaap_RetainedEarningsMember_01a0020e-cc88-78c4-b08c-766f6af2949e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a0020e-cc88-7062-a39e-9c88ea322630" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_01a0020e-cc88-7a4b-83fa-ee2ba44f5a6d" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a0020e-cc88-7062-a39e-9c88ea322630" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_01a0020e-cc88-7823-b27b-db78eb53b46b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a0020e-cc88-7c6d-90e4-aa65c5374c1b" xlink:to="loc_us-gaap_NoncontrollingInterestMember_01a0020e-cc88-7823-b27b-db78eb53b46b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a0020e-cc88-7b9b-991d-cd4fc6c7ca70" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a0020e-cc88-7333-a50d-703cbe6f840b" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a0020e-cc88-7b9b-991d-cd4fc6c7ca70" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cc88-7b9b-991d-cd4fc6c7ca70_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a0020e-cc88-7b9b-991d-cd4fc6c7ca70" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cc88-7b9b-991d-cd4fc6c7ca70_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cc88-70c4-ac99-85963bc1df6a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a0020e-cc88-7b9b-991d-cd4fc6c7ca70" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cc88-70c4-ac99-85963bc1df6a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TheBrandHouseCollectiveInc.Member_01a0020e-cc88-7d8c-9857-6ad164e65662" xlink:href="nxh-20260930.xsd#nxh_TheBrandHouseCollectiveInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cc88-70c4-ac99-85963bc1df6a" xlink:to="loc_nxh_TheBrandHouseCollectiveInc.Member_01a0020e-cc88-7d8c-9857-6ad164e65662" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_SFVServicesAndTheParentCompanyOfSFVLLGCLLCMember_01a0020e-cc88-7c25-8c95-213c702bc53f" xlink:href="nxh-20260930.xsd#nxh_SFVServicesAndTheParentCompanyOfSFVLLGCLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cc88-70c4-ac99-85963bc1df6a" xlink:to="loc_nxh_SFVServicesAndTheParentCompanyOfSFVLLGCLLCMember_01a0020e-cc88-7c25-8c95-213c702bc53f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TheContainerStoreHoldingsLLCMember_01a079cd-0220-7bd7-b222-398fd62d66bf" xlink:href="nxh-20260930.xsd#nxh_TheContainerStoreHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cc88-70c4-ac99-85963bc1df6a" xlink:to="loc_nxh_TheContainerStoreHoldingsLLCMember_01a079cd-0220-7bd7-b222-398fd62d66bf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a0020e-cc88-775b-8631-7d8cb7e019f9" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_01a0020e-cc88-78eb-bb8e-28afcc49bfb9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_SharesOutstanding_01a0020e-cc88-78eb-bb8e-28afcc49bfb9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_01a0020e-cc88-7899-99ea-d46d1f2c8216" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_01a0020e-cc88-7899-99ea-d46d1f2c8216" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_01a0020e-cc88-727b-8e32-cbf33196073f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_01a0020e-cc88-727b-8e32-cbf33196073f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_StockIssuedDuringPeriodSharesAcquisitionsIncludingAdjustments_01a1a28e-c5d5-77e9-ae98-dfbe72f68a5f" xlink:href="nxh-20260930.xsd#nxh_StockIssuedDuringPeriodSharesAcquisitionsIncludingAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_nxh_StockIssuedDuringPeriodSharesAcquisitionsIncludingAdjustments_01a1a28e-c5d5-77e9-ae98-dfbe72f68a5f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_01a0020e-cc88-7532-aeca-af1b9ea06f17" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesAcquisitions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_01a0020e-cc88-7532-aeca-af1b9ea06f17" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_01a0020e-cc88-7b70-abca-b42f492c35fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_01a0020e-cc88-7b70-abca-b42f492c35fe" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityOtherShares_01a15213-3995-7d76-973c-5223d42c203e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityOtherShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_StockholdersEquityOtherShares_01a15213-3995-7d76-973c-5223d42c203e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_01a0020e-cc88-764e-ac93-1e8adf9de143" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_01a0020e-cc88-77ab-8dee-972639605ef5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_TreasuryStockCommonShares_01a0020e-cc88-77ab-8dee-972639605ef5" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_01a0020e-cc88-760d-ab0b-4a4b60abdd47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockSharesAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_01a0020e-cc88-760d-ab0b-4a4b60abdd47" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_01a0020e-cc88-78dc-9a2a-34c8e48312a5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_01a0020e-cc88-78dc-9a2a-34c8e48312a5" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TreasuryStockRetainedInSettlementOfParticipationAgreementShares_01a15510-aeb7-75ff-b627-a3be4a906cab" xlink:href="nxh-20260930.xsd#nxh_TreasuryStockRetainedInSettlementOfParticipationAgreementShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_nxh_TreasuryStockRetainedInSettlementOfParticipationAgreementShares_01a15510-aeb7-75ff-b627-a3be4a906cab" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_01a0020e-cc88-76e8-89be-2db0e697ad57" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonShares"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_01a0020e-cc88-7b00-8b4b-02e7e03b1cd6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_01a0020e-cc88-7b00-8b4b-02e7e03b1cd6" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a0020e-cc88-780b-a564-262840fa2f4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a0020e-cc88-780b-a564-262840fa2f4b" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_01a0020e-cc88-7f42-9070-a932e6707881" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_01a0020e-cc88-7f42-9070-a932e6707881" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationEmployeeStockPurchaseProgramRequisiteServicePeriodRecognition_01a0020e-cc88-7bdb-bdf8-96f171d88326" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationEmployeeStockPurchaseProgramRequisiteServicePeriodRecognition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationEmployeeStockPurchaseProgramRequisiteServicePeriodRecognition_01a0020e-cc88-7bdb-bdf8-96f171d88326" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_01a0020e-cc88-7b14-89bd-3255c4facf9b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_01a0020e-cc88-7b14-89bd-3255c4facf9b" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueAcquisitions_01a0020e-cc88-770b-831b-081fcc21aed5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueAcquisitions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueAcquisitions_01a0020e-cc88-770b-831b-081fcc21aed5" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_AdjustmentsToAdditionalPaidInCapitalReclassificationOfConvertibleDebtConversionFeatureToEquity_01a151ff-5e60-791c-8cc8-58d9f34edd69" xlink:href="nxh-20260930.xsd#nxh_AdjustmentsToAdditionalPaidInCapitalReclassificationOfConvertibleDebtConversionFeatureToEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_nxh_AdjustmentsToAdditionalPaidInCapitalReclassificationOfConvertibleDebtConversionFeatureToEquity_01a151ff-5e60-791c-8cc8-58d9f34edd69" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_StockIssuedDuringPeriodValueSettlementOfAcquisitionRelatedLiabilities_01a177ce-c4cd-7990-be09-8f6c6e3e34d5" xlink:href="nxh-20260930.xsd#nxh_StockIssuedDuringPeriodValueSettlementOfAcquisitionRelatedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_nxh_StockIssuedDuringPeriodValueSettlementOfAcquisitionRelatedLiabilities_01a177ce-c4cd-7990-be09-8f6c6e3e34d5" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a0020e-cc88-7543-8f7f-681d54a60d84" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_NetIncomeLoss_01a0020e-cc88-7543-8f7f-681d54a60d84" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_01a0020e-cc88-723b-901d-c52a10857c04" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_01a0020e-cc88-723b-901d-c52a10857c04" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_01a0020e-cc88-79a8-82ee-f941c847f363" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_01a0020e-cc88-79a8-82ee-f941c847f363" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TreasuryStockRetainedInSettlementOfParticipationAgreementValue_01a19e0b-ec00-7cdc-ab42-f1f54ae8d617" xlink:href="nxh-20260930.xsd#nxh_TreasuryStockRetainedInSettlementOfParticipationAgreementValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_nxh_TreasuryStockRetainedInSettlementOfParticipationAgreementValue_01a19e0b-ec00-7cdc-ab42-f1f54ae8d617" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance_01a0020e-cc88-71f7-9b47-a784d95b9a51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance_01a0020e-cc88-71f7-9b47-a784d95b9a51" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_01a0020e-cc88-78f7-8354-464e260050b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_01a0020e-cc88-78f7-8354-464e260050b1" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_01a15208-d0fa-7191-bb7d-5ca7e8b7910e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_01a15208-d0fa-7191-bb7d-5ca7e8b7910e" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_01a0020e-cc88-73a3-a410-7fb02a0f168b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a0020e-cc88-747c-b8e8-a24e5cdd4dfb" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_01a0020e-cc88-73a3-a410-7fb02a0f168b" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a0020e-cc88-786e-94ca-6f2f488c996c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/BUSINESSCOMBINATIONSNarrativeDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#BUSINESSCOMBINATIONSNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/BUSINESSCOMBINATIONSNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_01a0020e-cc88-7a64-b58c-91d056b37173" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0020e-cc88-7517-8327-11727e8e33f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0020e-cc88-7a64-b58c-91d056b37173" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0020e-cc88-7517-8327-11727e8e33f1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a0020e-cc88-73ae-9e3e-a677d85a2e2c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0020e-cc88-7517-8327-11727e8e33f1" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a0020e-cc88-73ae-9e3e-a677d85a2e2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cc88-73ae-9e3e-a677d85a2e2c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a0020e-cc88-73ae-9e3e-a677d85a2e2c" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cc88-73ae-9e3e-a677d85a2e2c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cc88-7f3c-983b-768fd21f6823" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a0020e-cc88-73ae-9e3e-a677d85a2e2c" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cc88-7f3c-983b-768fd21f6823" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TheContainerStoreHoldingsLLCMember_01a04717-e086-71b5-9738-b7b5b0be8882" xlink:href="nxh-20260930.xsd#nxh_TheContainerStoreHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cc88-7f3c-983b-768fd21f6823" xlink:to="loc_nxh_TheContainerStoreHoldingsLLCMember_01a04717-e086-71b5-9738-b7b5b0be8882" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_SFVServicesAndTheParentCompanyOfSFVLLGCLLCMember_01a0020e-cc88-75dd-93a3-9da4506dd5c1" xlink:href="nxh-20260930.xsd#nxh_SFVServicesAndTheParentCompanyOfSFVLLGCLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cc88-7f3c-983b-768fd21f6823" xlink:to="loc_nxh_SFVServicesAndTheParentCompanyOfSFVLLGCLLCMember_01a0020e-cc88-75dd-93a3-9da4506dd5c1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TheBrandHouseCollectiveInc.Member_01a0020e-cc88-747c-ae17-a9867fe12026" xlink:href="nxh-20260930.xsd#nxh_TheBrandHouseCollectiveInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cc88-7f3c-983b-768fd21f6823" xlink:to="loc_nxh_TheBrandHouseCollectiveInc.Member_01a0020e-cc88-747c-ae17-a9867fe12026" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01a04718-1ed4-7d0d-8b54-225cb25fba6b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0020e-cc88-7517-8327-11727e8e33f1" xlink:to="loc_us-gaap_DebtInstrumentAxis_01a04718-1ed4-7d0d-8b54-225cb25fba6b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a04718-1ed4-7d0d-8b54-225cb25fba6b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a04718-1ed4-7d0d-8b54-225cb25fba6b" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a04718-1ed4-7d0d-8b54-225cb25fba6b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a04718-1ed4-7414-81a1-9176b4ac5c83" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a04718-1ed4-7d0d-8b54-225cb25fba6b" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a04718-1ed4-7414-81a1-9176b4ac5c83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_A5.00ConvertibleSeniorNotesMember_01a04718-1ed4-717d-8d4e-35cc801110f7" xlink:href="nxh-20260930.xsd#nxh_A5.00ConvertibleSeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a04718-1ed4-7414-81a1-9176b4ac5c83" xlink:to="loc_nxh_A5.00ConvertibleSeniorNotesMember_01a04718-1ed4-717d-8d4e-35cc801110f7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a04718-1ed4-728a-b069-689cbf7719f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0020e-cc88-7517-8327-11727e8e33f1" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a04718-1ed4-728a-b069-689cbf7719f5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a04718-1ed4-728a-b069-689cbf7719f5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a04718-1ed4-728a-b069-689cbf7719f5" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a04718-1ed4-728a-b069-689cbf7719f5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a04718-1ed4-7b59-8c79-14a3c46fea06" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a04718-1ed4-728a-b069-689cbf7719f5" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a04718-1ed4-7b59-8c79-14a3c46fea06" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtMember_01a04718-1ed4-71ae-b43a-404e108e00f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConvertibleDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a04718-1ed4-7b59-8c79-14a3c46fea06" xlink:to="loc_us-gaap_ConvertibleDebtMember_01a04718-1ed4-71ae-b43a-404e108e00f3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_01a0471c-c644-7ba8-a035-a08dd1015608" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0020e-cc88-7a64-b58c-91d056b37173" xlink:to="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_01a0471c-c644-7ba8-a035-a08dd1015608" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_01a04718-1ed4-7237-9a00-36a02717a7b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0020e-cc88-7a64-b58c-91d056b37173" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_01a04718-1ed4-7237-9a00-36a02717a7b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_01a04718-b656-7781-b248-96e659428529" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0020e-cc88-7a64-b58c-91d056b37173" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_01a04718-b656-7781-b248-96e659428529" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_01a1692b-11e0-77c0-8d4d-bcd8cc1defd4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0020e-cc88-7a64-b58c-91d056b37173" xlink:to="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_01a1692b-11e0-77c0-8d4d-bcd8cc1defd4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_01a1692c-b283-7a84-9e2c-e475f86e3d96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0020e-cc88-7a64-b58c-91d056b37173" xlink:to="loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_01a1692c-b283-7a84-9e2c-e475f86e3d96" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount_01a1886b-a9c2-7e19-89ab-ebf9b4de3543" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0020e-cc88-7a64-b58c-91d056b37173" xlink:to="loc_us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount_01a1886b-a9c2-7e19-89ab-ebf9b4de3543" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationEquityConsiderationConversionRatio_01a0020e-cc88-72dc-adfe-9d2cb19e6bb9" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationEquityConsiderationConversionRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0020e-cc88-7a64-b58c-91d056b37173" xlink:to="loc_nxh_BusinessCombinationEquityConsiderationConversionRatio_01a0020e-cc88-72dc-adfe-9d2cb19e6bb9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_01a0020e-cc88-7aee-8ecd-54b4407bb863" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0020e-cc88-7a64-b58c-91d056b37173" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_01a0020e-cc88-7aee-8ecd-54b4407bb863" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharePrice_01a079ee-436b-76a0-bb6b-6d2e0e8a0989" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0020e-cc88-7a64-b58c-91d056b37173" xlink:to="loc_us-gaap_SharePrice_01a079ee-436b-76a0-bb6b-6d2e0e8a0989" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage_01a0020e-cc88-751d-80cc-ab26c104aef2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0020e-cc88-7a64-b58c-91d056b37173" xlink:to="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage_01a0020e-cc88-751d-80cc-ab26c104aef2" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1_01a0020e-cc88-72a9-bc79-307027186192" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0020e-cc88-7a64-b58c-91d056b37173" xlink:to="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1_01a0020e-cc88-72a9-bc79-307027186192" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_01a16934-b929-72e5-8d4d-93ff2a835fb3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0020e-cc88-7a64-b58c-91d056b37173" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_01a16934-b929-72e5-8d4d-93ff2a835fb3" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_01a135ea-88c1-7119-a682-e6cc24435e3a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0020e-cc88-7a64-b58c-91d056b37173" xlink:to="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_01a135ea-88c1-7119-a682-e6cc24435e3a" xlink:type="arc" order="12"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/BUSINESSCOMBINATIONSTheContainerStorePurchasePriceAllocationDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#BUSINESSCOMBINATIONSTheContainerStorePurchasePriceAllocationDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/BUSINESSCOMBINATIONSTheContainerStorePurchasePriceAllocationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_01a0626b-57e9-7fd8-9a6a-04897bbf5d73" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0626b-57e9-72b8-bde4-c37cf2f0f64a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626b-57e9-7fd8-9a6a-04897bbf5d73" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0626b-57e9-72b8-bde4-c37cf2f0f64a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a0626b-57e9-70f3-94cc-69dc3f403f1a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0626b-57e9-72b8-bde4-c37cf2f0f64a" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a0626b-57e9-70f3-94cc-69dc3f403f1a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0626b-57e9-70f3-94cc-69dc3f403f1a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a0626b-57e9-70f3-94cc-69dc3f403f1a" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0626b-57e9-70f3-94cc-69dc3f403f1a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0626b-57e9-7cd0-8fc9-bb6e96269062" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a0626b-57e9-70f3-94cc-69dc3f403f1a" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0626b-57e9-7cd0-8fc9-bb6e96269062" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TheContainerStoreHoldingsLLCMember_01a0626b-57e9-7829-953e-eced6979abd1" xlink:href="nxh-20260930.xsd#nxh_TheContainerStoreHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0626b-57e9-7cd0-8fc9-bb6e96269062" xlink:to="loc_nxh_TheContainerStoreHoldingsLLCMember_01a0626b-57e9-7829-953e-eced6979abd1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a1552a-6a89-7eee-84f5-505cb4ea0a7c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0626b-57e9-72b8-bde4-c37cf2f0f64a" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a1552a-6a89-7eee-84f5-505cb4ea0a7c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a1552a-6a89-7eee-84f5-505cb4ea0a7c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a1552a-6a89-7eee-84f5-505cb4ea0a7c" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a1552a-6a89-7eee-84f5-505cb4ea0a7c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a1552a-6a89-7adc-af62-ee3a065d3167" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a1552a-6a89-7eee-84f5-505cb4ea0a7c" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a1552a-6a89-7adc-af62-ee3a065d3167" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtMember_01a1552a-9511-7dc3-932b-971ef0615a25" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConvertibleDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a1552a-6a89-7adc-af62-ee3a065d3167" xlink:to="loc_us-gaap_ConvertibleDebtMember_01a1552a-9511-7dc3-932b-971ef0615a25" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_01a0626b-57e9-7a6c-a0e9-dd2544115bd0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626b-57e9-7fd8-9a6a-04897bbf5d73" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_01a0626b-57e9-7a6c-a0e9-dd2544115bd0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_01a0c471-13fb-757c-84cc-820c643cc1b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626b-57e9-7fd8-9a6a-04897bbf5d73" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_01a0c471-13fb-757c-84cc-820c643cc1b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfPreexistingRelationships_01a10f5b-b166-72cb-8eeb-a11fd9de5ea5" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfPreexistingRelationships"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626b-57e9-7fd8-9a6a-04897bbf5d73" xlink:to="loc_nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfPreexistingRelationships_01a10f5b-b166-72cb-8eeb-a11fd9de5ea5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_01a0626b-57e9-710f-8c00-6616d3d0434b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626b-57e9-7fd8-9a6a-04897bbf5d73" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_01a0626b-57e9-710f-8c00-6616d3d0434b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_01a0626b-8e0c-77e1-b8d0-23e103cbe614" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626b-57e9-7fd8-9a6a-04897bbf5d73" xlink:to="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_01a0626b-8e0c-77e1-b8d0-23e103cbe614" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharePrice_01a0c471-ff76-7574-a502-b351ad9c1c4c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626b-57e9-7fd8-9a6a-04897bbf5d73" xlink:to="loc_us-gaap_SharePrice_01a0c471-ff76-7574-a502-b351ad9c1c4c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationPricePerShareDiscount_01a15527-f12d-76f1-91b7-e9d6dfb2a01b" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationPricePerShareDiscount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626b-57e9-7fd8-9a6a-04897bbf5d73" xlink:to="loc_nxh_BusinessCombinationPricePerShareDiscount_01a15527-f12d-76f1-91b7-e9d6dfb2a01b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionSharePrice_01a15527-b845-70d6-a64d-9c29690c1364" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionSharePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626b-57e9-7fd8-9a6a-04897bbf5d73" xlink:to="loc_us-gaap_BusinessAcquisitionSharePrice_01a15527-b845-70d6-a64d-9c29690c1364" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_01a1523b-f62a-71e5-99e5-b2febc007559" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626b-57e9-7fd8-9a6a-04897bbf5d73" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_01a1523b-f62a-71e5-99e5-b2febc007559" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_01a1552b-6d2a-7cd7-9361-a0a0d401563f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626b-57e9-7fd8-9a6a-04897bbf5d73" xlink:to="loc_us-gaap_DebtInstrumentFairValue_01a1552b-6d2a-7cd7-9361-a0a0d401563f" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_DebtInstrumentUnamortizedDiscountPremiumRate_01a1523d-de35-7766-9126-8153c6c0bb0b" xlink:href="nxh-20260930.xsd#nxh_DebtInstrumentUnamortizedDiscountPremiumRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626b-57e9-7fd8-9a6a-04897bbf5d73" xlink:to="loc_nxh_DebtInstrumentUnamortizedDiscountPremiumRate_01a1523d-de35-7766-9126-8153c6c0bb0b" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfPreexistingRelationships_01a19e24-a4f4-74fe-9703-9bc0ca08bcde" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfPreexistingRelationships"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/BUSINESSCOMBINATIONSTheContainerStoreAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#BUSINESSCOMBINATIONSTheContainerStoreAssetsAcquiredandLiabilitiesAssumedDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/BUSINESSCOMBINATIONSTheContainerStoreAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0626d-2c41-7a6b-a4b0-3e43416d70dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0626d-2c41-7a6b-a4b0-3e43416d70dc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a0626d-2c41-76b0-acba-638c59c7ec4c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0626d-2c41-7a6b-a4b0-3e43416d70dc" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a0626d-2c41-76b0-acba-638c59c7ec4c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0626d-2c41-76b0-acba-638c59c7ec4c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a0626d-2c41-76b0-acba-638c59c7ec4c" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0626d-2c41-76b0-acba-638c59c7ec4c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0626d-2c41-791e-b874-f680e0f5ce41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a0626d-2c41-76b0-acba-638c59c7ec4c" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0626d-2c41-791e-b874-f680e0f5ce41" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TheContainerStoreHoldingsLLCMember_01a0626d-2c41-7f05-8f65-3630e6f18c8f" xlink:href="nxh-20260930.xsd#nxh_TheContainerStoreHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0626d-2c41-791e-b874-f680e0f5ce41" xlink:to="loc_nxh_TheContainerStoreHoldingsLLCMember_01a0626d-2c41-7f05-8f65-3630e6f18c8f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_01a0626d-2c41-7728-ae16-f791ce8b02e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_01a0626d-2c41-7728-ae16-f791ce8b02e5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_01a0626d-2c41-7bcd-89db-dd4a777ac786" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_01a0626d-2c41-7bcd-89db-dd4a777ac786" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_01a0626d-2c41-7be6-9a53-a4f459c99f1a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_01a0626d-2c41-7be6-9a53-a4f459c99f1a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_01a0626d-2c41-7fb8-9664-16fd2be830f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_01a0626d-2c41-7fb8-9664-16fd2be830f8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_01a0626d-2c41-774e-be6d-9b40fb8b3b36" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_01a0626d-2c41-774e-be6d-9b40fb8b3b36" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_01a0626d-2c41-72b8-b3d3-5700c069dedb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_01a0626d-2c41-72b8-b3d3-5700c069dedb" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationRecognizedAssetAcquiredOperatingLeaseRightOfUseAsset_01a0626d-2c41-762c-b2b6-2ad122e18e25" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationRecognizedAssetAcquiredOperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_nxh_BusinessCombinationRecognizedAssetAcquiredOperatingLeaseRightOfUseAsset_01a0626d-2c41-762c-b2b6-2ad122e18e25" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_01a0626d-2c41-751c-bd91-7ac18839d8e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_01a0626d-2c41-751c-bd91-7ac18839d8e4" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_01a16930-0695-7a94-9361-d94353f24fe4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_01a16930-0695-7a94-9361-d94353f24fe4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_01a0626d-2c41-714f-89a3-27544dad129f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_01a0626d-2c41-714f-89a3-27544dad129f" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedAccruedLiabilitiesCurrent_01a0626d-2c41-77b6-8fee-3f7606f452e2" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationRecognizedLiabilityAssumedAccruedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedAccruedLiabilitiesCurrent_01a0626d-2c41-77b6-8fee-3f7606f452e2" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue_01a10f62-bc5f-7109-ae4a-a11e2f60eae8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue_01a10f62-bc5f-7109-ae4a-a11e2f60eae8" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedOperatingLeaseLiabilityCurrent_01a0626d-2c41-79c0-b060-3265f434e38c" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationRecognizedLiabilityAssumedOperatingLeaseLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedOperatingLeaseLiabilityCurrent_01a0626d-2c41-79c0-b060-3265f434e38c" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedShortTermDebtNet_01a079c5-c1f2-7225-bb5b-f89f5fd03b81" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationRecognizedLiabilityAssumedShortTermDebtNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedShortTermDebtNet_01a079c5-c1f2-7225-bb5b-f89f5fd03b81" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_01a0626d-2c41-75f5-8ada-e52e4d1ec7f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_01a0626d-2c41-75f5-8ada-e52e4d1ec7f6" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedOperatingLeaseLiabilityNoncurrent_01a0626d-2c41-72a9-9812-afd6bd0c2538" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationRecognizedLiabilityAssumedOperatingLeaseLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedOperatingLeaseLiabilityNoncurrent_01a0626d-2c41-72a9-9812-afd6bd0c2538" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_01a10f65-5140-7f18-bfb1-1aefe9241199" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_01a10f65-5140-7f18-bfb1-1aefe9241199" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_01a0626d-2c41-70fa-a9c9-4c457b239c16" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_01a0626d-2c41-70fa-a9c9-4c457b239c16" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_01a0626d-2c41-789d-bb0b-672371aa7af7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_01a0626d-2c41-789d-bb0b-672371aa7af7" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a16931-7023-72f3-b591-d504119db316" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a16931-7023-72f3-b591-d504119db316" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a16932-b204-745a-818a-80f58d4a0c49" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_Goodwill_01a16932-b204-745a-818a-80f58d4a0c49" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAcquiredFromAcquisition_01a0626d-2c41-74ec-b7e4-4a2e1a2aa87a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAcquiredFromAcquisition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_CashAcquiredFromAcquisition_01a0626d-2c41-74ec-b7e4-4a2e1a2aa87a" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_01a0626d-2c41-788d-a5bd-90b0e0c892fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0626d-2c41-71c4-8865-f7d3bc10b54d" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_01a0626d-2c41-788d-a5bd-90b0e0c892fd" xlink:type="arc" order="22"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/BUSINESSCOMBINATIONSSFVPurchaseConsiderationDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#BUSINESSCOMBINATIONSSFVPurchaseConsiderationDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/BUSINESSCOMBINATIONSSFVPurchaseConsiderationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-059f-708f-8f7a-4ba3402407c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0627c-059f-7395-9902-9d7e86b597a3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-059f-708f-8f7a-4ba3402407c7" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0627c-059f-7395-9902-9d7e86b597a3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a0627c-059f-7060-b478-e7249a2df550" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0627c-059f-7395-9902-9d7e86b597a3" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a0627c-059f-7060-b478-e7249a2df550" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0627c-059f-7060-b478-e7249a2df550_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a0627c-059f-7060-b478-e7249a2df550" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0627c-059f-7060-b478-e7249a2df550_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0627c-059f-73cc-84bf-64beba787493" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a0627c-059f-7060-b478-e7249a2df550" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0627c-059f-73cc-84bf-64beba787493" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_SFVServicesAndTheParentCompanyOfSFVLLGCLLCMember_01a0627c-059f-78b3-985c-ae0c1c38d788" xlink:href="nxh-20260930.xsd#nxh_SFVServicesAndTheParentCompanyOfSFVLLGCLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0627c-059f-73cc-84bf-64beba787493" xlink:to="loc_nxh_SFVServicesAndTheParentCompanyOfSFVLLGCLLCMember_01a0627c-059f-78b3-985c-ae0c1c38d788" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_01a0627c-059f-723b-95f4-57e25678cfab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-059f-708f-8f7a-4ba3402407c7" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_01a0627c-059f-723b-95f4-57e25678cfab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_01a0627c-059f-72bc-8d67-1ecbd1a765ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-059f-708f-8f7a-4ba3402407c7" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_01a0627c-059f-72bc-8d67-1ecbd1a765ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_01a0627c-583b-72ca-b18d-7aa9ea12ba57" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-059f-708f-8f7a-4ba3402407c7" xlink:to="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_01a0627c-583b-72ca-b18d-7aa9ea12ba57" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionSharePrice_01a0627c-583b-71a2-840f-7270307acabd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionSharePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-059f-708f-8f7a-4ba3402407c7" xlink:to="loc_us-gaap_BusinessAcquisitionSharePrice_01a0627c-583b-71a2-840f-7270307acabd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharePrice_01a0627c-583b-7cea-bee2-f1871e050cf1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-059f-708f-8f7a-4ba3402407c7" xlink:to="loc_us-gaap_SharePrice_01a0627c-583b-7cea-bee2-f1871e050cf1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationPricePerShareDiscount_01a177f8-61b9-79fd-8bec-fed3a8c999cd" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationPricePerShareDiscount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-059f-708f-8f7a-4ba3402407c7" xlink:to="loc_nxh_BusinessCombinationPricePerShareDiscount_01a177f8-61b9-79fd-8bec-fed3a8c999cd" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/BUSINESSCOMBINATIONSSFVAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#BUSINESSCOMBINATIONSSFVAssetsAcquiredandLiabilitiesAssumedDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/BUSINESSCOMBINATIONSSFVAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-cd5c-7aed-a184-b5469339b020" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0627c-cd5c-7375-ae91-42ac0c0d89c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-cd5c-7aed-a184-b5469339b020" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0627c-cd5c-7375-ae91-42ac0c0d89c7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a0627c-cd5c-7850-aa21-0b7c1a921cc6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0627c-cd5c-7375-ae91-42ac0c0d89c7" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a0627c-cd5c-7850-aa21-0b7c1a921cc6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0627c-cd5c-7850-aa21-0b7c1a921cc6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a0627c-cd5c-7850-aa21-0b7c1a921cc6" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0627c-cd5c-7850-aa21-0b7c1a921cc6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0627c-cd5c-7397-8a00-01ccccc29e86" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a0627c-cd5c-7850-aa21-0b7c1a921cc6" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0627c-cd5c-7397-8a00-01ccccc29e86" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_SFVServicesAndTheParentCompanyOfSFVLLGCLLCMember_01a0627c-cd5c-7a72-8ebf-0e20c390c127" xlink:href="nxh-20260930.xsd#nxh_SFVServicesAndTheParentCompanyOfSFVLLGCLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0627c-cd5c-7397-8a00-01ccccc29e86" xlink:to="loc_nxh_SFVServicesAndTheParentCompanyOfSFVLLGCLLCMember_01a0627c-cd5c-7a72-8ebf-0e20c390c127" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_01a0627c-cd5c-7324-8a74-eb08d110ab74" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-cd5c-7aed-a184-b5469339b020" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_01a0627c-cd5c-7324-8a74-eb08d110ab74" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAssets_01a135f2-f7f8-72ab-bb4b-afc5b8ddfd02" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-cd5c-7aed-a184-b5469339b020" xlink:to="loc_nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAssets_01a135f2-f7f8-72ab-bb4b-afc5b8ddfd02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_01a0627c-cd5c-72c4-9627-e3c6d77b1398" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-cd5c-7aed-a184-b5469339b020" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_01a0627c-cd5c-72c4-9627-e3c6d77b1398" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentLiabilitiesAssumed_01a135ef-fb44-76ff-8676-adea04a11a7b" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentLiabilitiesAssumed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-cd5c-7aed-a184-b5469339b020" xlink:to="loc_nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentLiabilitiesAssumed_01a135ef-fb44-76ff-8676-adea04a11a7b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a16939-da2e-7911-b7d7-320d5d3cc0d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-cd5c-7aed-a184-b5469339b020" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a16939-da2e-7911-b7d7-320d5d3cc0d1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentRecognizedAssetAcquiredNetOfLiabilitiesAssumed_01a177ee-343c-7bf0-8983-beb00839e6c8" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentRecognizedAssetAcquiredNetOfLiabilitiesAssumed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-cd5c-7aed-a184-b5469339b020" xlink:to="loc_nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentRecognizedAssetAcquiredNetOfLiabilitiesAssumed_01a177ee-343c-7bf0-8983-beb00839e6c8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a0627c-cd5c-7fe3-b52b-58164c08dc6d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-cd5c-7aed-a184-b5469339b020" xlink:to="loc_us-gaap_Goodwill_01a0627c-cd5c-7fe3-b52b-58164c08dc6d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_01a135ec-97f3-7be3-94bb-8acf608da4ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-cd5c-7aed-a184-b5469339b020" xlink:to="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_01a135ec-97f3-7be3-94bb-8acf608da4ef" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAcquiredFromAcquisition_01a0627c-cd5c-739e-80cb-76ae6f054882" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAcquiredFromAcquisition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-cd5c-7aed-a184-b5469339b020" xlink:to="loc_us-gaap_CashAcquiredFromAcquisition_01a0627c-cd5c-739e-80cb-76ae6f054882" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentCashAcquired_01a135ef-074f-79bd-8099-0f0de1985238" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentCashAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-cd5c-7aed-a184-b5469339b020" xlink:to="loc_nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentCashAcquired_01a135ef-074f-79bd-8099-0f0de1985238" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_01a0627c-cd5c-7de9-8339-804e51154235" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-cd5c-7aed-a184-b5469339b020" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_01a0627c-cd5c-7de9-8339-804e51154235" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred_01a135ed-729a-7e68-9244-405d1d5a7c0e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627c-cd5c-7aed-a184-b5469339b020" xlink:to="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred_01a135ed-729a-7e68-9244-405d1d5a7c0e" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/BUSINESSCOMBINATIONSTheBrandHouseCollectivePurchasePriceDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#BUSINESSCOMBINATIONSTheBrandHouseCollectivePurchasePriceDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/BUSINESSCOMBINATIONSTheBrandHouseCollectivePurchasePriceDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_01a06277-c1b4-7634-9306-8934b2fb9e88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a06277-c1b4-7db0-a571-883d7c732c4c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a06277-c1b4-7634-9306-8934b2fb9e88" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a06277-c1b4-7db0-a571-883d7c732c4c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a06277-c1b4-7684-a090-d0cab42ac042" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a06277-c1b4-7db0-a571-883d7c732c4c" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a06277-c1b4-7684-a090-d0cab42ac042" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a06277-c1b4-7684-a090-d0cab42ac042_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a06277-c1b4-7684-a090-d0cab42ac042" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a06277-c1b4-7684-a090-d0cab42ac042_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a06277-c1b4-781e-bfa0-9466fc9154c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a06277-c1b4-7684-a090-d0cab42ac042" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a06277-c1b4-781e-bfa0-9466fc9154c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TheBrandHouseCollectiveInc.Member_01a06277-c1b4-7e64-9671-858fc42cb6ff" xlink:href="nxh-20260930.xsd#nxh_TheBrandHouseCollectiveInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a06277-c1b4-781e-bfa0-9466fc9154c7" xlink:to="loc_nxh_TheBrandHouseCollectiveInc.Member_01a06277-c1b4-7e64-9671-858fc42cb6ff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_01a06277-c1b4-7e3c-be05-0c749bce9054" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a06277-c1b4-7634-9306-8934b2fb9e88" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_01a06277-c1b4-7e3c-be05-0c749bce9054" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationConsiderationTransferredEquityInterestShareBasedPaymentArrangements_01a06277-c1b4-75b4-972c-a92104e7b21b" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationConsiderationTransferredEquityInterestShareBasedPaymentArrangements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a06277-c1b4-7634-9306-8934b2fb9e88" xlink:to="loc_nxh_BusinessCombinationConsiderationTransferredEquityInterestShareBasedPaymentArrangements_01a06277-c1b4-75b4-972c-a92104e7b21b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfExistingDebt_01a06277-c1b4-70cc-8aac-8665f70a91b3" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfExistingDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a06277-c1b4-7634-9306-8934b2fb9e88" xlink:to="loc_nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfExistingDebt_01a06277-c1b4-70cc-8aac-8665f70a91b3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfPreexistingRelationships_01a06277-c1b4-7969-b6fe-ee8b4ea72e8b" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfPreexistingRelationships"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a06277-c1b4-7634-9306-8934b2fb9e88" xlink:to="loc_nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfPreexistingRelationships_01a06277-c1b4-7969-b6fe-ee8b4ea72e8b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_01a06277-c1b4-7538-9788-3905737502c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a06277-c1b4-7634-9306-8934b2fb9e88" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_01a06277-c1b4-7538-9788-3905737502c8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1_01a06277-c1b4-7276-a433-cb69493e1cf0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a06277-c1b4-7634-9306-8934b2fb9e88" xlink:to="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1_01a06277-c1b4-7276-a433-cb69493e1cf0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombination1_01a06277-c1b4-7cb5-b5be-d539e5b0c461" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombination1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a06277-c1b4-7634-9306-8934b2fb9e88" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombination1_01a06277-c1b4-7cb5-b5be-d539e5b0c461" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_01a06278-8c98-7473-af41-551224a1fa49" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a06277-c1b4-7634-9306-8934b2fb9e88" xlink:to="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_01a06278-8c98-7473-af41-551224a1fa49" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharePrice_01a06278-8c98-7b0e-b383-27e44f5d2a0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a06277-c1b4-7634-9306-8934b2fb9e88" xlink:to="loc_us-gaap_SharePrice_01a06278-8c98-7b0e-b383-27e44f5d2a0c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationConsiderationTransferredEquityInterestShareIssuedShareBasedPaymentArrangementNumberOfShares_01a06278-8c98-7313-b4b9-adeaad4fe188" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationConsiderationTransferredEquityInterestShareIssuedShareBasedPaymentArrangementNumberOfShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a06277-c1b4-7634-9306-8934b2fb9e88" xlink:to="loc_nxh_BusinessCombinationConsiderationTransferredEquityInterestShareIssuedShareBasedPaymentArrangementNumberOfShares_01a06278-8c98-7313-b4b9-adeaad4fe188" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfNotesPayable_01a06278-8c98-7360-bdaf-08ac54a0ef49" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfNotesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a06277-c1b4-7634-9306-8934b2fb9e88" xlink:to="loc_nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfNotesPayable_01a06278-8c98-7360-bdaf-08ac54a0ef49" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfAccruedInterest_01a06278-8c98-7543-bc9f-d5ace9b8cdee" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a06277-c1b4-7634-9306-8934b2fb9e88" xlink:to="loc_nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfAccruedInterest_01a06278-8c98-7543-bc9f-d5ace9b8cdee" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfAccountsReceivable_01a06278-8c98-7ace-a96b-a3a851fe140c" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfAccountsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a06277-c1b4-7634-9306-8934b2fb9e88" xlink:to="loc_nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfAccountsReceivable_01a06278-8c98-7ace-a96b-a3a851fe140c" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfCollaborationFeeReceivable_01a06278-8c98-7eea-ac4a-3f15e8aefa3d" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfCollaborationFeeReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a06277-c1b4-7634-9306-8934b2fb9e88" xlink:to="loc_nxh_BusinessCombinationConsiderationTransferredLiabilitiesIncurredSettlementOfCollaborationFeeReceivable_01a06278-8c98-7eea-ac4a-3f15e8aefa3d" xlink:type="arc" order="13"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/BUSINESSCOMBINATIONSTheBrandHouseCollectiveAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#BUSINESSCOMBINATIONSTheBrandHouseCollectiveAssetsAcquiredandLiabilitiesAssumedDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/BUSINESSCOMBINATIONSTheBrandHouseCollectiveAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0627a-7a4e-703b-bd04-dee228ff7b3e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0627a-7a4e-703b-bd04-dee228ff7b3e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a0627a-7a4e-738d-982a-8f19547a6a6e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a0627a-7a4e-703b-bd04-dee228ff7b3e" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a0627a-7a4e-738d-982a-8f19547a6a6e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0627a-7a4e-738d-982a-8f19547a6a6e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a0627a-7a4e-738d-982a-8f19547a6a6e" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0627a-7a4e-738d-982a-8f19547a6a6e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0627a-7a4e-7a16-add2-1a32a4b44862" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a0627a-7a4e-738d-982a-8f19547a6a6e" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0627a-7a4e-7a16-add2-1a32a4b44862" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TheBrandHouseCollectiveInc.Member_01a0627a-7a4e-7a6c-ac72-a2482dc65d4f" xlink:href="nxh-20260930.xsd#nxh_TheBrandHouseCollectiveInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0627a-7a4e-7a16-add2-1a32a4b44862" xlink:to="loc_nxh_TheBrandHouseCollectiveInc.Member_01a0627a-7a4e-7a6c-ac72-a2482dc65d4f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_01a0627a-7a4e-7c84-8228-811bda71b7cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_01a0627a-7a4e-7c84-8228-811bda71b7cf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_01a0627a-7a4e-7317-8868-134d135afc40" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_01a0627a-7a4e-7317-8868-134d135afc40" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentInventory_01a135e1-f5c7-7a42-a130-cdfbdc67ca43" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentInventory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentInventory_01a135e1-f5c7-7a42-a130-cdfbdc67ca43" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_01a0627a-7a4e-7329-b41e-2e9b6fc80c51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_01a0627a-7a4e-7329-b41e-2e9b6fc80c51" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_01a0627a-7a4e-71dc-b7bb-97ec9ac52dd7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_01a0627a-7a4e-71dc-b7bb-97ec9ac52dd7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment_01a161d1-61a4-7cff-a2f1-1f8fdbaba1ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment_01a161d1-61a4-7cff-a2f1-1f8fdbaba1ad" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationRecognizedAssetAcquiredOperatingLeaseRightOfUseAsset_01a0627a-7a4e-7315-935e-7d4ef4fea93c" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationRecognizedAssetAcquiredOperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_nxh_BusinessCombinationRecognizedAssetAcquiredOperatingLeaseRightOfUseAsset_01a0627a-7a4e-7315-935e-7d4ef4fea93c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_01a0627a-7a4e-75ee-8c64-1549874d9837" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_01a0627a-7a4e-75ee-8c64-1549874d9837" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_01a0627a-7a4e-7235-acdb-53d602d950b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_01a0627a-7a4e-7235-acdb-53d602d950b4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAssets_01a161d4-1b60-7136-93ad-d0346f7ad21c" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAssets_01a161d4-1b60-7136-93ad-d0346f7ad21c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_01a0627a-7a4e-7065-aecb-e7300ced5a88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_01a0627a-7a4e-7065-aecb-e7300ced5a88" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedAccruedLiabilitiesCurrent_01a0627a-7a4e-7635-8df8-a15ed4f79125" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationRecognizedLiabilityAssumedAccruedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedAccruedLiabilitiesCurrent_01a0627a-7a4e-7635-8df8-a15ed4f79125" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAccruedLiabilities_01a161da-b9a5-7b89-a664-13783b76e4e9" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAccruedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAccruedLiabilities_01a161da-b9a5-7b89-a664-13783b76e4e9" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedOperatingLeaseLiabilityCurrent_01a0627a-7a4e-73f0-ae8e-fe02620d2196" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationRecognizedLiabilityAssumedOperatingLeaseLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedOperatingLeaseLiabilityCurrent_01a0627a-7a4e-73f0-ae8e-fe02620d2196" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_01a0627a-7a4e-7e7b-aaf6-2c22384ca6a7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_01a0627a-7a4e-7e7b-aaf6-2c22384ca6a7" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedOperatingLeaseLiabilityNoncurrent_01a0627a-7a4e-7ff7-8c09-ca4851ff3a8f" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationRecognizedLiabilityAssumedOperatingLeaseLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedOperatingLeaseLiabilityNoncurrent_01a0627a-7a4e-7ff7-8c09-ca4851ff3a8f" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_01a0627a-7a4e-7985-ab75-56e1005289f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_01a0627a-7a4e-7985-ab75-56e1005289f2" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_01a0627a-7a4e-7c00-9835-1a93091f0f3c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_01a0627a-7a4e-7c00-9835-1a93091f0f3c" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentLiabilitiesAssumed_01a161db-d9f8-7022-ba6f-7934cc1bf39d" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentLiabilitiesAssumed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_nxh_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentLiabilitiesAssumed_01a161db-d9f8-7022-ba6f-7934cc1bf39d" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a0627a-7a4e-749e-ae79-1e0be9c0759d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_01a0627a-7a4e-749e-ae79-1e0be9c0759d" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_01a0627a-7a4e-74b5-902b-77c4068a74c5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_01a0627a-7a4e-74b5-902b-77c4068a74c5" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a0627a-7a4e-7b32-94ac-5cc137bc587d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_Goodwill_01a0627a-7a4e-7b32-94ac-5cc137bc587d" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_01a135e3-cf2d-7819-8cca-3b1c67057c33" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_01a135e3-cf2d-7819-8cca-3b1c67057c33" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAcquiredFromAcquisition_01a0627a-7a4e-731b-89e7-6ab6650143b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAcquiredFromAcquisition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_CashAcquiredFromAcquisition_01a0627a-7a4e-731b-89e7-6ab6650143b4" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_01a0627a-7a4e-7dc8-8a3c-088d7be493ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a0627a-7a4e-7c64-b4f5-38c20fe26418" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_01a0627a-7a4e-7dc8-8a3c-088d7be493ae" xlink:type="arc" order="24"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/FAIRVALUEMEASUREMENTScheduleofAssetsandLiabilitiesMeasuredatFairValueDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#FAIRVALUEMEASUREMENTScheduleofAssetsandLiabilitiesMeasuredatFairValueDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/FAIRVALUEMEASUREMENTScheduleofAssetsandLiabilitiesMeasuredatFairValueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a0020e-cc88-7712-8d3d-425259e0823d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a0020e-cc88-76af-af7c-184abd977f02" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a0020e-cc88-7712-8d3d-425259e0823d" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a0020e-cc88-76af-af7c-184abd977f02" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a0020e-cc88-7ecb-913c-cac4e6d68cb7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a0020e-cc88-76af-af7c-184abd977f02" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a0020e-cc88-7ecb-913c-cac4e6d68cb7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-7ecb-913c-cac4e6d68cb7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a0020e-cc88-7ecb-913c-cac4e6d68cb7" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-7ecb-913c-cac4e6d68cb7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-7c30-a5e9-5763a8b3e7c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a0020e-cc88-7ecb-913c-cac4e6d68cb7" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-7c30-a5e9-5763a8b3e7c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_01a0020e-cc88-7c0a-a469-c8289af9be0e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-7c30-a5e9-5763a8b3e7c6" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_01a0020e-cc88-7c0a-a469-c8289af9be0e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_01a0020e-cc88-7c1a-ae04-f375a9ae4c08" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-7c30-a5e9-5763a8b3e7c6" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_01a0020e-cc88-7c1a-ae04-f375a9ae4c08" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_01a0020e-cc88-7edd-84c2-b0dc73c1017e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-7c30-a5e9-5763a8b3e7c6" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_01a0020e-cc88-7edd-84c2-b0dc73c1017e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_01a0020e-cc88-7745-844e-d5c58c42b2bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a0020e-cc88-7712-8d3d-425259e0823d" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_01a0020e-cc88-7745-844e-d5c58c42b2bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_01a0020e-cc88-7349-af34-66ca10790f51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_01a0020e-cc88-7745-844e-d5c58c42b2bb" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_01a0020e-cc88-7349-af34-66ca10790f51" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent_01a0020e-cc88-7ae1-bd01-91d1f57694e3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_01a0020e-cc88-7745-844e-d5c58c42b2bb" xlink:to="loc_us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent_01a0020e-cc88-7ae1-bd01-91d1f57694e3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_01a0020e-cc88-7eb5-99d5-0aba6ea1200f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_01a0020e-cc88-7745-844e-d5c58c42b2bb" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_01a0020e-cc88-7eb5-99d5-0aba6ea1200f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableFairValueDisclosure_01a0020e-cc88-7d19-b26e-577c0bf3268a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoansReceivableFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_01a0020e-cc88-7745-844e-d5c58c42b2bb" xlink:to="loc_us-gaap_LoansReceivableFairValueDisclosure_01a0020e-cc88-7d19-b26e-577c0bf3268a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_01a0020e-cc88-7c1b-986e-ec3b3bf64ee6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_01a0020e-cc88-7745-844e-d5c58c42b2bb" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_01a0020e-cc88-7c1b-986e-ec3b3bf64ee6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_01a0020e-cc88-75ea-9d2d-ab4d8f78531a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a0020e-cc88-7712-8d3d-425259e0823d" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_01a0020e-cc88-75ea-9d2d-ab4d8f78531a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsFairValueDisclosure_01a0020e-cc88-7cd5-b3ad-8920219ee96d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommitmentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_01a0020e-cc88-75ea-9d2d-ab4d8f78531a" xlink:to="loc_us-gaap_CommitmentsFairValueDisclosure_01a0020e-cc88-7cd5-b3ad-8920219ee96d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_01a0020e-cc88-7b86-bfdd-8d153a974fb1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_01a0020e-cc88-75ea-9d2d-ab4d8f78531a" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_01a0020e-cc88-7b86-bfdd-8d153a974fb1" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/FAIRVALUEMEASUREMENTScheduleofLevel3InvestmentActivityDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#FAIRVALUEMEASUREMENTScheduleofLevel3InvestmentActivityDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/FAIRVALUEMEASUREMENTScheduleofLevel3InvestmentActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a0020e-cc88-72fa-8c83-ac44079c5eb9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a0020e-cc88-70b2-a8c7-db762ca2ead0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a0020e-cc88-72fa-8c83-ac44079c5eb9" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a0020e-cc88-70b2-a8c7-db762ca2ead0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a0020e-cc88-76ed-8e14-44451fe6b8b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a0020e-cc88-70b2-a8c7-db762ca2ead0" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a0020e-cc88-76ed-8e14-44451fe6b8b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-76ed-8e14-44451fe6b8b6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a0020e-cc88-76ed-8e14-44451fe6b8b6" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-76ed-8e14-44451fe6b8b6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-7a42-adf3-f86e9af8aa50" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a0020e-cc88-76ed-8e14-44451fe6b8b6" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-7a42-adf3-f86e9af8aa50" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_01a0020e-cc88-7070-b2c3-03fbec968a7c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-7a42-adf3-f86e9af8aa50" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_01a0020e-cc88-7070-b2c3-03fbec968a7c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_01a0020e-cc88-7a9c-8ee4-0c6caecbbf8f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a0020e-cc88-72fa-8c83-ac44079c5eb9" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_01a0020e-cc88-7a9c-8ee4-0c6caecbbf8f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_01a0020e-cc88-7062-ac4d-ddb988d9034b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_01a0020e-cc88-7a9c-8ee4-0c6caecbbf8f" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_01a0020e-cc88-7062-ac4d-ddb988d9034b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_01a0020e-cc88-7eee-b1c8-1a10a959785f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_01a0020e-cc88-7a9c-8ee4-0c6caecbbf8f" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_01a0020e-cc88-7eee-b1c8-1a10a959785f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_01a151ce-d77e-70dc-bf8e-69e86b0ef3ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_01a0020e-cc88-7a9c-8ee4-0c6caecbbf8f" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_01a151ce-d77e-70dc-bf8e-69e86b0ef3ff" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAccruedInterest_01a0020e-cc88-7cfa-b7e2-9be255db2618" xlink:href="nxh-20260930.xsd#nxh_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_01a0020e-cc88-7a9c-8ee4-0c6caecbbf8f" xlink:to="loc_nxh_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAccruedInterest_01a0020e-cc88-7cfa-b7e2-9be255db2618" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_01a0020e-cc88-7972-a2c8-c4bc060f33ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/FAIRVALUEMEASUREMENTScheduleofLevel3LiabilityActivityDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#FAIRVALUEMEASUREMENTScheduleofLevel3LiabilityActivityDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/FAIRVALUEMEASUREMENTScheduleofLevel3LiabilityActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_01a0020e-cc88-7453-b125-7d61c8994a79" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_01a0020e-cc88-7ac3-8186-c4fb4694fd81" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_01a0020e-cc88-7453-b125-7d61c8994a79" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_01a0020e-cc88-7ac3-8186-c4fb4694fd81" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a0020e-cc88-7805-8063-5aa25f08be05" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_01a0020e-cc88-7ac3-8186-c4fb4694fd81" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a0020e-cc88-7805-8063-5aa25f08be05" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-7805-8063-5aa25f08be05_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a0020e-cc88-7805-8063-5aa25f08be05" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-7805-8063-5aa25f08be05_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-738a-abfd-1a99ce9e88e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a0020e-cc88-7805-8063-5aa25f08be05" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-738a-abfd-1a99ce9e88e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_01a0020e-cc88-7ed3-995a-07ca4496ae03" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a0020e-cc88-738a-abfd-1a99ce9e88e1" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_01a0020e-cc88-7ed3-995a-07ca4496ae03" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_01a0020e-cc88-79fe-b694-50490796f1cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_01a0020e-cc88-7453-b125-7d61c8994a79" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_01a0020e-cc88-79fe-b694-50490796f1cd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_01a0020e-cc88-7d89-bad5-06edda22b4b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_01a0020e-cc88-79fe-b694-50490796f1cd" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_01a0020e-cc88-7d89-bad5-06edda22b4b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_01a1645e-bb7e-7b21-b9ce-4438b7a53485" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_01a0020e-cc88-79fe-b694-50490796f1cd" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_01a1645e-bb7e-7b21-b9ce-4438b7a53485" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityRemeasurementOfConversionFeatureDueToPartialExtinguishment_01a17e84-ca91-7961-ad9b-0d384082953f" xlink:href="nxh-20260930.xsd#nxh_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityRemeasurementOfConversionFeatureDueToPartialExtinguishment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_01a0020e-cc88-79fe-b694-50490796f1cd" xlink:to="loc_nxh_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityRemeasurementOfConversionFeatureDueToPartialExtinguishment_01a17e84-ca91-7961-ad9b-0d384082953f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityRemeasurementOfConversionFeatureUponShareholderApproval_01a17e85-6435-7e07-9599-0ca111278a96" xlink:href="nxh-20260930.xsd#nxh_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityRemeasurementOfConversionFeatureUponShareholderApproval"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_01a0020e-cc88-79fe-b694-50490796f1cd" xlink:to="loc_nxh_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityRemeasurementOfConversionFeatureUponShareholderApproval_01a17e85-6435-7e07-9599-0ca111278a96" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3_01a1696f-109b-7d5c-8c3c-c350543d356b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_01a0020e-cc88-79fe-b694-50490796f1cd" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3_01a1696f-109b-7d5c-8c3c-c350543d356b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityDerecognition_01a0020e-cc88-7408-9e62-9dbc675837f9" xlink:href="nxh-20260930.xsd#nxh_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityDerecognition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_01a0020e-cc88-79fe-b694-50490796f1cd" xlink:to="loc_nxh_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityDerecognition_01a0020e-cc88-7408-9e62-9dbc675837f9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_01a0020e-cc88-7809-b38f-234e69ce8dc5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/FAIRVALUEMEASUREMENTKeyValuationInputsDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#FAIRVALUEMEASUREMENTKeyValuationInputsDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/FAIRVALUEMEASUREMENTKeyValuationInputsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_01a18b27-0330-740c-8a24-1f6dd6e26e4a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_01a18b27-0330-780a-9e40-88fdafa8aa07" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_01a18b27-0330-740c-8a24-1f6dd6e26e4a" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_01a18b27-0330-780a-9e40-88fdafa8aa07" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01a18b27-0330-72aa-b131-5ac24372ceeb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_01a18b27-0330-780a-9e40-88fdafa8aa07" xlink:to="loc_us-gaap_DebtInstrumentAxis_01a18b27-0330-72aa-b131-5ac24372ceeb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a18b27-0330-72aa-b131-5ac24372ceeb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a18b27-0330-72aa-b131-5ac24372ceeb" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a18b27-0330-72aa-b131-5ac24372ceeb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a18b27-0330-7bef-a947-d58c2cbfe03f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a18b27-0330-72aa-b131-5ac24372ceeb" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a18b27-0330-7bef-a947-d58c2cbfe03f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_A5.00ConvertibleSeniorNotesMember_01a18b27-0330-729f-9420-ccaed5f5c666" xlink:href="nxh-20260930.xsd#nxh_A5.00ConvertibleSeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a18b27-0330-7bef-a947-d58c2cbfe03f" xlink:to="loc_nxh_A5.00ConvertibleSeniorNotesMember_01a18b27-0330-729f-9420-ccaed5f5c666" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a18b27-0330-76b9-9789-0db7f14b6951" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_01a18b27-0330-780a-9e40-88fdafa8aa07" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a18b27-0330-76b9-9789-0db7f14b6951" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a18b27-0330-76b9-9789-0db7f14b6951_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a18b27-0330-76b9-9789-0db7f14b6951" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a18b27-0330-76b9-9789-0db7f14b6951_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a18b27-0330-7203-ac2a-174040786c9a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a18b27-0330-76b9-9789-0db7f14b6951" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a18b27-0330-7203-ac2a-174040786c9a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtMember_01a18b27-0330-746e-99c5-240e5d7a7ebc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConvertibleDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a18b27-0330-7203-ac2a-174040786c9a" xlink:to="loc_us-gaap_ConvertibleDebtMember_01a18b27-0330-746e-99c5-240e5d7a7ebc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeAxis_01a18b27-0330-724c-835a-be14275592cb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_01a18b27-0330-780a-9e40-88fdafa8aa07" xlink:to="loc_us-gaap_MeasurementInputTypeAxis_01a18b27-0330-724c-835a-be14275592cb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_01a18b27-0330-724c-835a-be14275592cb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_01a18b27-0330-724c-835a-be14275592cb" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_01a18b27-0330-724c-835a-be14275592cb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_01a18b27-0330-77d9-9add-e554679f98b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_01a18b27-0330-724c-835a-be14275592cb" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_01a18b27-0330-77d9-9add-e554679f98b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputExpectedDividendRateMember_01a18b3c-dea9-7f9d-b481-b0758b974d88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputExpectedDividendRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_01a18b27-0330-77d9-9add-e554679f98b2" xlink:to="loc_us-gaap_MeasurementInputExpectedDividendRateMember_01a18b3c-dea9-7f9d-b481-b0758b974d88" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputExpectedTermMember_01a18b3d-2537-7a15-90d2-b9977eb7e365" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputExpectedTermMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_01a18b27-0330-77d9-9add-e554679f98b2" xlink:to="loc_us-gaap_MeasurementInputExpectedTermMember_01a18b3d-2537-7a15-90d2-b9977eb7e365" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputRiskFreeInterestRateMember_01a18b37-6282-7030-a667-d292803c76df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputRiskFreeInterestRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_01a18b27-0330-77d9-9add-e554679f98b2" xlink:to="loc_us-gaap_MeasurementInputRiskFreeInterestRateMember_01a18b37-6282-7030-a667-d292803c76df" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputPriceVolatilityMember_01a18b3d-fddb-714e-a9bc-72eb851e2397" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputPriceVolatilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_01a18b27-0330-77d9-9add-e554679f98b2" xlink:to="loc_us-gaap_MeasurementInputPriceVolatilityMember_01a18b3d-fddb-714e-a9bc-72eb851e2397" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ConvertibleDebtInterestBearingLiability_01a18b28-cb5e-7927-8b5e-33eca529e10b" xlink:href="nxh-20260930.xsd#nxh_ConvertibleDebtInterestBearingLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_01a18b27-0330-740c-8a24-1f6dd6e26e4a" xlink:to="loc_nxh_ConvertibleDebtInterestBearingLiability_01a18b28-cb5e-7927-8b5e-33eca529e10b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ConvertibleDebtEquityValue_01a18b2a-71ff-7b3e-8bf2-8ea306e1707f" xlink:href="nxh-20260930.xsd#nxh_ConvertibleDebtEquityValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_01a18b27-0330-740c-8a24-1f6dd6e26e4a" xlink:to="loc_nxh_ConvertibleDebtEquityValue_01a18b2a-71ff-7b3e-8bf2-8ea306e1707f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ConvertibleDebtInterestBearingDebtAndEquityValue_01a18b2b-ae3d-7e44-9990-7c3531c91a0a" xlink:href="nxh-20260930.xsd#nxh_ConvertibleDebtInterestBearingDebtAndEquityValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_01a18b27-0330-740c-8a24-1f6dd6e26e4a" xlink:to="loc_nxh_ConvertibleDebtInterestBearingDebtAndEquityValue_01a18b2b-ae3d-7e44-9990-7c3531c91a0a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentMeasurementInput_01a18b34-b502-7a3c-a5b3-0b92d71b7d7a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentMeasurementInput"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_01a18b27-0330-740c-8a24-1f6dd6e26e4a" xlink:to="loc_us-gaap_DebtInstrumentMeasurementInput_01a18b34-b502-7a3c-a5b3-0b92d71b7d7a" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/FAIRVALUEMEASUREMENTFairValueOfFinancialLiabilitiesDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#FAIRVALUEMEASUREMENTFairValueOfFinancialLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/FAIRVALUEMEASUREMENTFairValueOfFinancialLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_01a18b43-0e85-7667-a8d0-29cebfd0917f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_01a18b43-0e85-7564-abbf-82655c2466fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a18b43-0e85-7667-a8d0-29cebfd0917f" xlink:to="loc_us-gaap_DebtInstrumentTable_01a18b43-0e85-7564-abbf-82655c2466fc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01a18b43-0e85-7955-803b-731028220571" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a18b43-0e85-7564-abbf-82655c2466fc" xlink:to="loc_us-gaap_DebtInstrumentAxis_01a18b43-0e85-7955-803b-731028220571" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a18b43-0e85-7955-803b-731028220571_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a18b43-0e85-7955-803b-731028220571" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a18b43-0e85-7955-803b-731028220571_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a18b43-0e85-7218-a8d6-8b56e3fc7777" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a18b43-0e85-7955-803b-731028220571" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a18b43-0e85-7218-a8d6-8b56e3fc7777" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_A5.00ConvertibleSeniorNotesMember_01a18b43-0e85-7b83-bf38-e934c4553129" xlink:href="nxh-20260930.xsd#nxh_A5.00ConvertibleSeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a18b43-0e85-7218-a8d6-8b56e3fc7777" xlink:to="loc_nxh_A5.00ConvertibleSeniorNotesMember_01a18b43-0e85-7b83-bf38-e934c4553129" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a18b43-0e85-77f7-9c12-b4299ac973e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a18b43-0e85-7564-abbf-82655c2466fc" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a18b43-0e85-77f7-9c12-b4299ac973e8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a18b43-0e85-77f7-9c12-b4299ac973e8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a18b43-0e85-77f7-9c12-b4299ac973e8" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a18b43-0e85-77f7-9c12-b4299ac973e8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a18b43-0e85-717c-b2a4-6a2094827d73" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a18b43-0e85-77f7-9c12-b4299ac973e8" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a18b43-0e85-717c-b2a4-6a2094827d73" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtMember_01a18b43-0e85-7e22-aa26-06c7f76a2d0e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConvertibleDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a18b43-0e85-717c-b2a4-6a2094827d73" xlink:to="loc_us-gaap_ConvertibleDebtMember_01a18b43-0e85-7e22-aa26-06c7f76a2d0e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_01a18b43-0e85-7314-889a-ba98488af8b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a18b43-0e85-7564-abbf-82655c2466fc" xlink:to="loc_us-gaap_CreditFacilityAxis_01a18b43-0e85-7314-889a-ba98488af8b4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a18b43-0e85-7314-889a-ba98488af8b4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_01a18b43-0e85-7314-889a-ba98488af8b4" xlink:to="loc_us-gaap_CreditFacilityDomain_01a18b43-0e85-7314-889a-ba98488af8b4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a18b43-0e85-79ad-a0ae-66359740879e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_01a18b43-0e85-7314-889a-ba98488af8b4" xlink:to="loc_us-gaap_CreditFacilityDomain_01a18b43-0e85-79ad-a0ae-66359740879e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_EclipseExitABLCreditFacilityMember_01a18b43-0e85-7812-be96-79f5a5e6ab47" xlink:href="nxh-20260930.xsd#nxh_EclipseExitABLCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a18b43-0e85-79ad-a0ae-66359740879e" xlink:to="loc_nxh_EclipseExitABLCreditFacilityMember_01a18b43-0e85-7812-be96-79f5a5e6ab47" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_A2019ElfaSeniorSecuredCreditMember_01a18b43-0e85-7c5e-82c2-58d278351cae" xlink:href="nxh-20260930.xsd#nxh_A2019ElfaSeniorSecuredCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a18b43-0e85-79ad-a0ae-66359740879e" xlink:to="loc_nxh_A2019ElfaSeniorSecuredCreditMember_01a18b43-0e85-7c5e-82c2-58d278351cae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BMOLoanAndSecurityAgreementMember_01a18b43-0e85-7e57-ae32-21547fd3acad" xlink:href="nxh-20260930.xsd#nxh_BMOLoanAndSecurityAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a18b43-0e85-79ad-a0ae-66359740879e" xlink:to="loc_nxh_BMOLoanAndSecurityAgreementMember_01a18b43-0e85-7e57-ae32-21547fd3acad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BankOfAmericaRevolverMember_01a18b43-0e85-7afc-b3ea-ca63386bd7a6" xlink:href="nxh-20260930.xsd#nxh_BankOfAmericaRevolverMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a18b43-0e85-79ad-a0ae-66359740879e" xlink:to="loc_nxh_BankOfAmericaRevolverMember_01a18b43-0e85-7afc-b3ea-ca63386bd7a6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_01a19e02-5b40-7458-bf9f-7644134702e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a18b43-0e85-7564-abbf-82655c2466fc" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_01a19e02-5b40-7458-bf9f-7644134702e8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a19e02-5b40-7458-bf9f-7644134702e8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_01a19e02-5b40-7458-bf9f-7644134702e8" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a19e02-5b40-7458-bf9f-7644134702e8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_01a19e02-f8a8-7cab-8bfe-5a2c2e7d623f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_01a19e02-5b40-7458-bf9f-7644134702e8" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_01a19e02-f8a8-7cab-8bfe-5a2c2e7d623f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a19e02-5b40-7b71-b9b5-3fde9347c515" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_01a19e02-f8a8-7cab-8bfe-5a2c2e7d623f" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a19e02-5b40-7b71-b9b5-3fde9347c515" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_01a19e02-9c21-72ac-b16a-e6348dc67621" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a19e02-5b40-7b71-b9b5-3fde9347c515" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_01a19e02-9c21-72ac-b16a-e6348dc67621" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_01a19e02-be78-71cb-8b9e-7cea09d79351" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a19e02-5b40-7b71-b9b5-3fde9347c515" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_01a19e02-be78-71cb-8b9e-7cea09d79351" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_01a19e01-f5d7-79a9-8465-dcf155f1751c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a18b43-0e85-7667-a8d0-29cebfd0917f" xlink:to="loc_us-gaap_DebtInstrumentFairValue_01a19e01-f5d7-79a9-8465-dcf155f1751c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/PROPERTYANDEQUIPMENTNETScheduleofPropertyPlantandEquipmentDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#PROPERTYANDEQUIPMENTNETScheduleofPropertyPlantandEquipmentDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/PROPERTYANDEQUIPMENTNETScheduleofPropertyPlantandEquipmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a0020e-cd1a-7922-b6f9-545088546c2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a0020e-cd1a-7ea0-abcc-dd45ae89e1f0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a0020e-cd1a-7922-b6f9-545088546c2e" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a0020e-cd1a-7ea0-abcc-dd45ae89e1f0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a0020e-cd1a-7214-90c9-0b8a3ba65b48" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a0020e-cd1a-7ea0-abcc-dd45ae89e1f0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a0020e-cd1a-7214-90c9-0b8a3ba65b48" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a0020e-cd1a-7214-90c9-0b8a3ba65b48_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a0020e-cd1a-7214-90c9-0b8a3ba65b48" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a0020e-cd1a-7214-90c9-0b8a3ba65b48_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a0020e-cd1a-71d7-86fc-1130188e98cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a0020e-cd1a-7214-90c9-0b8a3ba65b48" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a0020e-cd1a-71d7-86fc-1130188e98cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ComputerHardwareandSoftwareMember_01a0020e-cd1a-7c2b-8d40-24d5aa7a0e7b" xlink:href="nxh-20260930.xsd#nxh_ComputerHardwareandSoftwareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a0020e-cd1a-71d7-86fc-1130188e98cc" xlink:to="loc_nxh_ComputerHardwareandSoftwareMember_01a0020e-cd1a-7c2b-8d40-24d5aa7a0e7b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandAndBuildingMember_01a13b1e-d6cd-7d1a-83e8-c4a1578c5294" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LandAndBuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a0020e-cd1a-71d7-86fc-1130188e98cc" xlink:to="loc_us-gaap_LandAndBuildingMember_01a13b1e-d6cd-7d1a-83e8-c4a1578c5294" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_FurnitureAndEquipmentMember_01a0020e-cd1a-770f-b419-75eae05eb9ee" xlink:href="nxh-20260930.xsd#nxh_FurnitureAndEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a0020e-cd1a-71d7-86fc-1130188e98cc" xlink:to="loc_nxh_FurnitureAndEquipmentMember_01a0020e-cd1a-770f-b419-75eae05eb9ee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_01a0020e-cd1a-7780-967e-8e605d3f840d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LeaseholdImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a0020e-cd1a-71d7-86fc-1130188e98cc" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_01a0020e-cd1a-7780-967e-8e605d3f840d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressMember_01a13b1f-b855-7993-ae16-4606f9d755cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConstructionInProgressMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a0020e-cd1a-71d7-86fc-1130188e98cc" xlink:to="loc_us-gaap_ConstructionInProgressMember_01a13b1f-b855-7993-ae16-4606f9d755cd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_01a0020e-cd1a-7299-8395-1a8b7153dc2a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a0020e-cd1a-7922-b6f9-545088546c2e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_01a0020e-cd1a-7299-8395-1a8b7153dc2a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_01a0020e-cd1a-7c4a-a43e-fa2bbecc1bd5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a0020e-cd1a-7922-b6f9-545088546c2e" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_01a0020e-cd1a-7c4a-a43e-fa2bbecc1bd5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_01a0020e-cd1a-706d-a623-f4cdda6a24a4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a0020e-cd1a-7922-b6f9-545088546c2e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_01a0020e-cd1a-706d-a623-f4cdda6a24a4" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/PROPERTYANDEQUIPMENTNETScheduleofDepreciationExpenseDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#PROPERTYANDEQUIPMENTNETScheduleofDepreciationExpenseDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/PROPERTYANDEQUIPMENTNETScheduleofDepreciationExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a0020e-cd1a-72ac-87ad-8621693343df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a0020e-cd1a-7a4d-8732-995d26a2bff9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a0020e-cd1a-72ac-87ad-8621693343df" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a0020e-cd1a-7a4d-8732-995d26a2bff9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a0020e-cd1a-73cd-90d6-b694eda71f31" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfIncomeLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a0020e-cd1a-7a4d-8732-995d26a2bff9" xlink:to="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a0020e-cd1a-73cd-90d6-b694eda71f31" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_01a0020e-cd1a-76ff-a986-81d9c34231ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a0020e-cd1a-72ac-87ad-8621693343df" xlink:to="loc_us-gaap_Depreciation_01a0020e-cd1a-76ff-a986-81d9c34231ff" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/PROPERTYANDEQUIPMENTNETScheduleofDepreciationExpenseDetails_1" xlink:type="simple" xlink:href="nxh-20260930.xsd#PROPERTYANDEQUIPMENTNETScheduleofDepreciationExpenseDetails_1"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/PROPERTYANDEQUIPMENTNETScheduleofDepreciationExpenseDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a0020e-cd1a-72ac-87ad-8621693343df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a0020e-cd1a-7a4d-8732-995d26a2bff9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a0020e-cd1a-72ac-87ad-8621693343df" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a0020e-cd1a-7a4d-8732-995d26a2bff9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_01a0020e-cd1a-76ff-a986-81d9c34231ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a0020e-cd1a-72ac-87ad-8621693343df" xlink:to="loc_us-gaap_Depreciation_01a0020e-cd1a-76ff-a986-81d9c34231ff" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/GOODWILLANDINTANGIBLEASSETSNETSummaryofGoodwillDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#GOODWILLANDINTANGIBLEASSETSNETSummaryofGoodwillDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/GOODWILLANDINTANGIBLEASSETSNETSummaryofGoodwillDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_01a16972-3e43-7cb5-a7a1-7ad7a9dd62f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_01a16972-3e43-78c8-9129-33b8c2998400" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_01a16972-3e43-7cb5-a7a1-7ad7a9dd62f5" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_01a16972-3e43-78c8-9129-33b8c2998400" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a16973-9097-7880-b558-facf4588292a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_01a16972-3e43-78c8-9129-33b8c2998400" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a16973-9097-7880-b558-facf4588292a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a16973-9097-7880-b558-facf4588292a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a16973-9097-7880-b558-facf4588292a" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a16973-9097-7880-b558-facf4588292a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a16973-9097-7c79-a4f6-c2740079db9a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a16973-9097-7880-b558-facf4588292a" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a16973-9097-7c79-a4f6-c2740079db9a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TheBrandHouseCollectiveInc.Member_01a16973-b29f-7bdb-ab2d-9221f946281d" xlink:href="nxh-20260930.xsd#nxh_TheBrandHouseCollectiveInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a16973-9097-7c79-a4f6-c2740079db9a" xlink:to="loc_nxh_TheBrandHouseCollectiveInc.Member_01a16973-b29f-7bdb-ab2d-9221f946281d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_SFVServicesAndTheParentCompanyOfSFVLLGCLLCMember_01a16973-ca6b-766f-9ea0-688624d1a1a7" xlink:href="nxh-20260930.xsd#nxh_SFVServicesAndTheParentCompanyOfSFVLLGCLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a16973-9097-7c79-a4f6-c2740079db9a" xlink:to="loc_nxh_SFVServicesAndTheParentCompanyOfSFVLLGCLLCMember_01a16973-ca6b-766f-9ea0-688624d1a1a7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TheContainerStoreHoldingsLLCMember_01a16973-e630-776e-ab6a-2c69440f7616" xlink:href="nxh-20260930.xsd#nxh_TheContainerStoreHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a16973-9097-7c79-a4f6-c2740079db9a" xlink:to="loc_nxh_TheContainerStoreHoldingsLLCMember_01a16973-e630-776e-ab6a-2c69440f7616" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillRollForward_01a16972-c140-73c3-b615-10535815f375" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_01a16972-3e43-7cb5-a7a1-7ad7a9dd62f5" xlink:to="loc_us-gaap_GoodwillRollForward_01a16972-c140-73c3-b615-10535815f375" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a16972-3e43-761c-97cf-0528c00de0d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_01a16972-c140-73c3-b615-10535815f375" xlink:to="loc_us-gaap_Goodwill_01a16972-3e43-761c-97cf-0528c00de0d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_01a16973-6ddc-73fd-87ac-eedbf41bc90a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillAcquiredDuringPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_01a16972-c140-73c3-b615-10535815f375" xlink:to="loc_us-gaap_GoodwillAcquiredDuringPeriod_01a16973-6ddc-73fd-87ac-eedbf41bc90a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a16973-063b-7934-881b-c500c315839e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/EQUITYSECURITIESScheduleofEquitySecuritiesOwnershipInterestDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#EQUITYSECURITIESScheduleofEquitySecuritiesOwnershipInterestDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/EQUITYSECURITIESScheduleofEquitySecuritiesOwnershipInterestDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a0020e-cd1a-7687-a48e-211bc4589edc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_01a0020e-cd1a-73f9-9e52-7860b16b035b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a0020e-cd1a-7687-a48e-211bc4589edc" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_01a0020e-cd1a-73f9-9e52-7860b16b035b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_01a0020e-cd1a-7651-ad24-24364108defe" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_01a0020e-cd1a-73f9-9e52-7860b16b035b" xlink:to="loc_srt_OwnershipAxis_01a0020e-cd1a-7651-ad24-24364108defe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_01a0020e-cd1a-7651-ad24-24364108defe_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_01a0020e-cd1a-7651-ad24-24364108defe" xlink:to="loc_srt_OwnershipDomain_01a0020e-cd1a-7651-ad24-24364108defe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_01a0020e-cd1a-7b51-a393-ecbbc62a5942" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_01a0020e-cd1a-7651-ad24-24364108defe" xlink:to="loc_srt_OwnershipDomain_01a0020e-cd1a-7b51-a393-ecbbc62a5942" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_MediciVenturesLPMember_01a0020e-cd1a-7e35-af0b-79fb8690d63c" xlink:href="nxh-20260930.xsd#nxh_MediciVenturesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_01a0020e-cd1a-7b51-a393-ecbbc62a5942" xlink:to="loc_nxh_MediciVenturesLPMember_01a0020e-cd1a-7e35-af0b-79fb8690d63c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a0020e-cd1a-7678-af2b-70ecfb2a38cd" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_01a0020e-cd1a-73f9-9e52-7860b16b035b" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a0020e-cd1a-7678-af2b-70ecfb2a38cd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_01a0020e-cd1a-7678-af2b-70ecfb2a38cd_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a0020e-cd1a-7678-af2b-70ecfb2a38cd" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_01a0020e-cd1a-7678-af2b-70ecfb2a38cd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_01a0020e-cd1a-78fd-a25b-a5f46ce05dfa" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a0020e-cd1a-7678-af2b-70ecfb2a38cd" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_01a0020e-cd1a-78fd-a25b-a5f46ce05dfa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TZero.comInc.Member_01a0020e-cd1a-7764-a57e-513c4d59b899" xlink:href="nxh-20260930.xsd#nxh_TZero.comInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_01a0020e-cd1a-78fd-a25b-a5f46ce05dfa" xlink:to="loc_nxh_TZero.comInc.Member_01a0020e-cd1a-7764-a57e-513c4d59b899" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ZulilyNewcoMember_01a0020e-cd1a-7de3-b725-fdcaef2f4d04" xlink:href="nxh-20260930.xsd#nxh_ZulilyNewcoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_01a0020e-cd1a-78fd-a25b-a5f46ce05dfa" xlink:to="loc_nxh_ZulilyNewcoMember_01a0020e-cd1a-7de3-b725-fdcaef2f4d04" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest_01a0020e-cd1a-70ad-96e7-34eef785c3ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a0020e-cd1a-7687-a48e-211bc4589edc" xlink:to="loc_us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest_01a0020e-cd1a-70ad-96e7-34eef785c3ca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_01a0020e-cd1a-7702-92e6-c359a6264144" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a0020e-cd1a-7687-a48e-211bc4589edc" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_01a0020e-cd1a-7702-92e6-c359a6264144" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/EQUITYSECURITIESNarrativeDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#EQUITYSECURITIESNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/EQUITYSECURITIESNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a0020e-cd1a-7f29-9451-8d359ece1f20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_01a0020e-cd1a-725b-8793-d19c3e5b6374" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a0020e-cd1a-7f29-9451-8d359ece1f20" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_01a0020e-cd1a-725b-8793-d19c3e5b6374" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a0020e-cd1a-7793-afc5-820a38f239a4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_01a0020e-cd1a-725b-8793-d19c3e5b6374" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a0020e-cd1a-7793-afc5-820a38f239a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_01a0020e-cd1a-7793-afc5-820a38f239a4_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a0020e-cd1a-7793-afc5-820a38f239a4" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_01a0020e-cd1a-7793-afc5-820a38f239a4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_01a0020e-cd1a-7e98-9811-203b6da38287" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_01a0020e-cd1a-7793-afc5-820a38f239a4" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_01a0020e-cd1a-7e98-9811-203b6da38287" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TheBrandHouseCollectiveInc.Member_01a0020e-cd1a-7947-ac61-63ce327d89d9" xlink:href="nxh-20260930.xsd#nxh_TheBrandHouseCollectiveInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_01a0020e-cd1a-7e98-9811-203b6da38287" xlink:to="loc_nxh_TheBrandHouseCollectiveInc.Member_01a0020e-cd1a-7947-ac61-63ce327d89d9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TZero.comInc.Member_01a0020e-cd1a-7071-b519-366fd6c1422f" xlink:href="nxh-20260930.xsd#nxh_TZero.comInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_01a0020e-cd1a-7e98-9811-203b6da38287" xlink:to="loc_nxh_TZero.comInc.Member_01a0020e-cd1a-7071-b519-366fd6c1422f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_01a0020e-cd1a-701c-9c40-0c963e91999c" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_01a0020e-cd1a-725b-8793-d19c3e5b6374" xlink:to="loc_srt_CounterpartyNameAxis_01a0020e-cd1a-701c-9c40-0c963e91999c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_01a0020e-cd1a-701c-9c40-0c963e91999c_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_01a0020e-cd1a-701c-9c40-0c963e91999c" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_01a0020e-cd1a-701c-9c40-0c963e91999c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_01a0020e-cd1a-7da8-8d9f-f1339b29cccf" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_01a0020e-cd1a-701c-9c40-0c963e91999c" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_01a0020e-cd1a-7da8-8d9f-f1339b29cccf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TZero.comInc.Member_01a0020e-cd1a-7eaf-aae3-129ee0282ea6" xlink:href="nxh-20260930.xsd#nxh_TZero.comInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_01a0020e-cd1a-7da8-8d9f-f1339b29cccf" xlink:to="loc_nxh_TZero.comInc.Member_01a0020e-cd1a-7eaf-aae3-129ee0282ea6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_01a0020e-cd1a-7971-a93a-5e628bb0fb01" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_01a0020e-cd1a-725b-8793-d19c3e5b6374" xlink:to="loc_dei_LegalEntityAxis_01a0020e-cd1a-7971-a93a-5e628bb0fb01" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a0020e-cd1a-7971-a93a-5e628bb0fb01_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_01a0020e-cd1a-7971-a93a-5e628bb0fb01" xlink:to="loc_dei_EntityDomain_01a0020e-cd1a-7971-a93a-5e628bb0fb01_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a0020e-cd1a-70ca-88f6-aa193db33ed0" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_01a0020e-cd1a-7971-a93a-5e628bb0fb01" xlink:to="loc_dei_EntityDomain_01a0020e-cd1a-70ca-88f6-aa193db33ed0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TZero.comInc.Member_01a0020e-cd1a-7dae-bd2c-7b176668b77e" xlink:href="nxh-20260930.xsd#nxh_TZero.comInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_01a0020e-cd1a-70ca-88f6-aa193db33ed0" xlink:to="loc_nxh_TZero.comInc.Member_01a0020e-cd1a-7dae-bd2c-7b176668b77e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_01a0020e-cd1a-71b3-8ffd-fcf39fa23dde" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_01a0020e-cd1a-725b-8793-d19c3e5b6374" xlink:to="loc_us-gaap_StatementClassOfStockAxis_01a0020e-cd1a-71b3-8ffd-fcf39fa23dde" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a0020e-cd1a-71b3-8ffd-fcf39fa23dde_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a0020e-cd1a-71b3-8ffd-fcf39fa23dde" xlink:to="loc_us-gaap_ClassOfStockDomain_01a0020e-cd1a-71b3-8ffd-fcf39fa23dde_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a0020e-cd1a-78c1-b175-34fd685ec4d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a0020e-cd1a-71b3-8ffd-fcf39fa23dde" xlink:to="loc_us-gaap_ClassOfStockDomain_01a0020e-cd1a-78c1-b175-34fd685ec4d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_01a0020e-cd1a-7515-ae32-f7f9091d53e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeriesBPreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a0020e-cd1a-78c1-b175-34fd685ec4d4" xlink:to="loc_us-gaap_SeriesBPreferredStockMember_01a0020e-cd1a-7515-ae32-f7f9091d53e6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_01a0020e-cd1a-7ac0-8f8f-e7026225cdd2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a0020e-cd1a-78c1-b175-34fd685ec4d4" xlink:to="loc_us-gaap_CommonStockMember_01a0020e-cd1a-7ac0-8f8f-e7026225cdd2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a0020e-cd1a-7650-a7a4-e975db482c21" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_01a0020e-cd1a-725b-8793-d19c3e5b6374" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a0020e-cd1a-7650-a7a4-e975db482c21" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cd1a-7650-a7a4-e975db482c21_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a0020e-cd1a-7650-a7a4-e975db482c21" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cd1a-7650-a7a4-e975db482c21_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cd1a-7098-b93c-1eeaa617d1f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a0020e-cd1a-7650-a7a4-e975db482c21" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cd1a-7098-b93c-1eeaa617d1f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TheBrandHouseCollectiveInc.Member_01a0020e-cd1a-7861-a08a-794d2a11d6a1" xlink:href="nxh-20260930.xsd#nxh_TheBrandHouseCollectiveInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a0020e-cd1a-7098-b93c-1eeaa617d1f8" xlink:to="loc_nxh_TheBrandHouseCollectiveInc.Member_01a0020e-cd1a-7861-a08a-794d2a11d6a1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermInvestments_01a0020e-cd1a-7f6d-9d14-c8d3a1844e80" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a0020e-cd1a-7f29-9451-8d359ece1f20" xlink:to="loc_us-gaap_LongTermInvestments_01a0020e-cd1a-7f6d-9d14-c8d3a1844e80" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFVNINoncurrent_01a0020e-cd1a-722d-89ef-94e05d7c90c0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquitySecuritiesFVNINoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a0020e-cd1a-7f29-9451-8d359ece1f20" xlink:to="loc_us-gaap_EquitySecuritiesFVNINoncurrent_01a0020e-cd1a-722d-89ef-94e05d7c90c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1_01a0020e-cd1a-7d39-a419-0eeacad6eb62" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a0020e-cd1a-7f29-9451-8d359ece1f20" xlink:to="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1_01a0020e-cd1a-7d39-a419-0eeacad6eb62" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TokenToShareConversionRatio_01a0020e-cd1a-722e-a946-c4522a589da2" xlink:href="nxh-20260930.xsd#nxh_TokenToShareConversionRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a0020e-cd1a-7f29-9451-8d359ece1f20" xlink:to="loc_nxh_TokenToShareConversionRatio_01a0020e-cd1a-722e-a946-c4522a589da2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_EquityMethodInvestmentIndirectOwnershipPercentage_01a0020e-cd1a-7573-8ba2-0b351b48dde4" xlink:href="nxh-20260930.xsd#nxh_EquityMethodInvestmentIndirectOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a0020e-cd1a-7f29-9451-8d359ece1f20" xlink:to="loc_nxh_EquityMethodInvestmentIndirectOwnershipPercentage_01a0020e-cd1a-7573-8ba2-0b351b48dde4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansAndLeasesReceivableCommitmentsVariableRates_01a0020e-cd1a-7a73-83f1-0ca702c6999a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoansAndLeasesReceivableCommitmentsVariableRates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_01a0020e-cd1a-7f29-9451-8d359ece1f20" xlink:to="loc_us-gaap_LoansAndLeasesReceivableCommitmentsVariableRates_01a0020e-cd1a-7a73-83f1-0ca702c6999a" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/EQUITYSECURITIESScheduleofEquityMethodInvestmentsDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#EQUITYSECURITIESScheduleofEquityMethodInvestmentsDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/EQUITYSECURITIESScheduleofEquityMethodInvestmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueOptionQuantitativeDisclosuresLineItems_01a0020e-cd1a-71df-90a3-8afdc47b43d8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueOptionQuantitativeDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueOptionQuantitativeDisclosuresTable_01a0020e-cd1a-7cf1-90f7-16ce3623f207" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueOptionQuantitativeDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueOptionQuantitativeDisclosuresLineItems_01a0020e-cd1a-71df-90a3-8afdc47b43d8" xlink:to="loc_us-gaap_FairValueOptionQuantitativeDisclosuresTable_01a0020e-cd1a-7cf1-90f7-16ce3623f207" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a0020e-cd1a-749c-ac04-316844dba10f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueOptionQuantitativeDisclosuresTable_01a0020e-cd1a-7cf1-90f7-16ce3623f207" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a0020e-cd1a-749c-ac04-316844dba10f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a0020e-cd1a-749c-ac04-316844dba10f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a0020e-cd1a-749c-ac04-316844dba10f" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a0020e-cd1a-749c-ac04-316844dba10f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a0020e-cd1a-7ccd-be0b-7d07761609bd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a0020e-cd1a-749c-ac04-316844dba10f" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a0020e-cd1a-7ccd-be0b-7d07761609bd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_EquitySecuritiesExcludingTBHCMember_01a0020e-cd1a-747d-a2ad-9d140cb66000" xlink:href="nxh-20260930.xsd#nxh_EquitySecuritiesExcludingTBHCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a0020e-cd1a-7ccd-be0b-7d07761609bd" xlink:to="loc_nxh_EquitySecuritiesExcludingTBHCMember_01a0020e-cd1a-747d-a2ad-9d140cb66000" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_01a0020e-cd1a-7948-aee3-bbf920efa647" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueOptionQuantitativeDisclosuresLineItems_01a0020e-cd1a-71df-90a3-8afdc47b43d8" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_01a0020e-cd1a-7948-aee3-bbf920efa647" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueOptionChangesInFairValueGainLoss1_01a0020e-cd1a-7106-9dec-2bfb69283c41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueOptionChangesInFairValueGainLoss1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueOptionQuantitativeDisclosuresLineItems_01a0020e-cd1a-71df-90a3-8afdc47b43d8" xlink:to="loc_us-gaap_FairValueOptionChangesInFairValueGainLoss1_01a0020e-cd1a-7106-9dec-2bfb69283c41" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/BORROWINGSScheduleofDebtDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#BORROWINGSScheduleofDebtDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/BORROWINGSScheduleofDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_01a16210-2d08-7ce8-9969-4a111c28518d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_01a16210-2d08-7198-88f2-f6e1f8097022" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a16210-2d08-7ce8-9969-4a111c28518d" xlink:to="loc_us-gaap_DebtInstrumentTable_01a16210-2d08-7198-88f2-f6e1f8097022" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a16210-2d08-7543-88a3-e6dc35cc9367" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a16210-2d08-7198-88f2-f6e1f8097022" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a16210-2d08-7543-88a3-e6dc35cc9367" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a16210-2d08-7543-88a3-e6dc35cc9367_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a16210-2d08-7543-88a3-e6dc35cc9367" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a16210-2d08-7543-88a3-e6dc35cc9367_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a16210-2d08-7e81-8f0e-60473fcf6ad4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a16210-2d08-7543-88a3-e6dc35cc9367" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a16210-2d08-7e81-8f0e-60473fcf6ad4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtMember_01a16216-8d1c-79bd-b29f-b33ac9e754a2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConvertibleDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a16210-2d08-7e81-8f0e-60473fcf6ad4" xlink:to="loc_us-gaap_ConvertibleDebtMember_01a16216-8d1c-79bd-b29f-b33ac9e754a2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_01a1a72b-4683-72dd-99cd-596de277c59b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a16210-2d08-7e81-8f0e-60473fcf6ad4" xlink:to="loc_us-gaap_LineOfCreditMember_01a1a72b-4683-72dd-99cd-596de277c59b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01a16210-2d08-7b0b-bf64-901496f1fd92" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a16210-2d08-7198-88f2-f6e1f8097022" xlink:to="loc_us-gaap_DebtInstrumentAxis_01a16210-2d08-7b0b-bf64-901496f1fd92" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a16210-2d08-7b0b-bf64-901496f1fd92_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a16210-2d08-7b0b-bf64-901496f1fd92" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a16210-2d08-7b0b-bf64-901496f1fd92_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a16210-2d08-78a8-a3b3-b1176674a233" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a16210-2d08-7b0b-bf64-901496f1fd92" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a16210-2d08-78a8-a3b3-b1176674a233" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_A5.00ConvertibleSeniorNotesMember_01a16216-8d1c-7df5-ad90-c977864d219f" xlink:href="nxh-20260930.xsd#nxh_A5.00ConvertibleSeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a16210-2d08-78a8-a3b3-b1176674a233" xlink:to="loc_nxh_A5.00ConvertibleSeniorNotesMember_01a16216-8d1c-7df5-ad90-c977864d219f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_A2019OriginalRevolvingFacilityMember_01a1a72b-98fa-7d35-b730-58e51fc0ca53" xlink:href="nxh-20260930.xsd#nxh_A2019OriginalRevolvingFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a16210-2d08-78a8-a3b3-b1176674a233" xlink:to="loc_nxh_A2019OriginalRevolvingFacilityMember_01a1a72b-98fa-7d35-b730-58e51fc0ca53" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BankOfAmericaRevolverMember_01a1a72c-6021-72b9-9d91-898d40113204" xlink:href="nxh-20260930.xsd#nxh_BankOfAmericaRevolverMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a16210-2d08-78a8-a3b3-b1176674a233" xlink:to="loc_nxh_BankOfAmericaRevolverMember_01a1a72c-6021-72b9-9d91-898d40113204" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ElfaFinanceLeaseMember_01a16254-67be-7a34-a966-ac857f60f664" xlink:href="nxh-20260930.xsd#nxh_ElfaFinanceLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a16210-2d08-78a8-a3b3-b1176674a233" xlink:to="loc_nxh_ElfaFinanceLeaseMember_01a16254-67be-7a34-a966-ac857f60f664" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_01a16253-8bce-7a4b-9ff9-f14e17218077" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a16210-2d08-7198-88f2-f6e1f8097022" xlink:to="loc_us-gaap_CreditFacilityAxis_01a16253-8bce-7a4b-9ff9-f14e17218077" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a16253-8bce-7a4b-9ff9-f14e17218077_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_01a16253-8bce-7a4b-9ff9-f14e17218077" xlink:to="loc_us-gaap_CreditFacilityDomain_01a16253-8bce-7a4b-9ff9-f14e17218077_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a16253-8bce-767a-ab82-d99ad97768c0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_01a16253-8bce-7a4b-9ff9-f14e17218077" xlink:to="loc_us-gaap_CreditFacilityDomain_01a16253-8bce-767a-ab82-d99ad97768c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_EclipseExitABLCreditFacilityMember_01a16253-a48e-7b5e-a6a1-604c2f0019da" xlink:href="nxh-20260930.xsd#nxh_EclipseExitABLCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a16253-8bce-767a-ab82-d99ad97768c0" xlink:to="loc_nxh_EclipseExitABLCreditFacilityMember_01a16253-a48e-7b5e-a6a1-604c2f0019da" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_01a1a72b-4683-7ba3-b52e-5286c3eda302" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a16253-8bce-767a-ab82-d99ad97768c0" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_01a1a72b-4683-7ba3-b52e-5286c3eda302" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BMOLoanAndSecurityAgreementMember_01a16253-a48e-74df-80da-2c94b04b02e3" xlink:href="nxh-20260930.xsd#nxh_BMOLoanAndSecurityAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a16253-8bce-767a-ab82-d99ad97768c0" xlink:to="loc_nxh_BMOLoanAndSecurityAgreementMember_01a16253-a48e-74df-80da-2c94b04b02e3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BankOfAmericaRevolverMember_01a16253-a48e-7b45-b60c-efa6f8539227" xlink:href="nxh-20260930.xsd#nxh_BankOfAmericaRevolverMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a16253-8bce-767a-ab82-d99ad97768c0" xlink:to="loc_nxh_BankOfAmericaRevolverMember_01a16253-a48e-7b45-b60c-efa6f8539227" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ElfaFinanceLeaseMember_01a16253-a48e-7dd6-915c-68417b47dae2" xlink:href="nxh-20260930.xsd#nxh_ElfaFinanceLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a16253-8bce-767a-ab82-d99ad97768c0" xlink:to="loc_nxh_ElfaFinanceLeaseMember_01a16253-a48e-7dd6-915c-68417b47dae2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_01a1a72b-98fa-7c7d-bdf0-3ab19e96858b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a16210-2d08-7198-88f2-f6e1f8097022" xlink:to="loc_dei_LegalEntityAxis_01a1a72b-98fa-7c7d-bdf0-3ab19e96858b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a1a72b-98fa-7c7d-bdf0-3ab19e96858b_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_01a1a72b-98fa-7c7d-bdf0-3ab19e96858b" xlink:to="loc_dei_EntityDomain_01a1a72b-98fa-7c7d-bdf0-3ab19e96858b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a1a72b-98fa-75e4-a7b5-244d62bd3bfb" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_01a1a72b-98fa-7c7d-bdf0-3ab19e96858b" xlink:to="loc_dei_EntityDomain_01a1a72b-98fa-75e4-a7b5-244d62bd3bfb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ElfaInternationalABMember_01a1a72b-98fa-7749-b98c-ddeac0c41981" xlink:href="nxh-20260930.xsd#nxh_ElfaInternationalABMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_01a1a72b-98fa-75e4-a7b5-244d62bd3bfb" xlink:to="loc_nxh_ElfaInternationalABMember_01a1a72b-98fa-7749-b98c-ddeac0c41981" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_01a17951-4b78-797d-9440-1af49e1b2df1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a16210-2d08-7ce8-9969-4a111c28518d" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_01a17951-4b78-797d-9440-1af49e1b2df1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_01a17952-101c-7df1-80d4-6f19e6101e60" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a16210-2d08-7ce8-9969-4a111c28518d" xlink:to="loc_us-gaap_FinanceLeaseLiability_01a17952-101c-7df1-80d4-6f19e6101e60" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_LongtermDebtGrossAndLeaseObligation_01a177d3-855b-7783-8193-71f2a15bf0ab" xlink:href="nxh-20260930.xsd#nxh_LongtermDebtGrossAndLeaseObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a16210-2d08-7ce8-9969-4a111c28518d" xlink:to="loc_nxh_LongtermDebtGrossAndLeaseObligation_01a177d3-855b-7783-8193-71f2a15bf0ab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_01a16210-e2c8-728d-afee-e42344b1b04c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a16210-2d08-7ce8-9969-4a111c28518d" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_01a16210-e2c8-728d-afee-e42344b1b04c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_01a16210-2d08-7e01-a4be-2229061a0e47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a16210-2d08-7ce8-9969-4a111c28518d" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_01a16210-2d08-7e01-a4be-2229061a0e47" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/BORROWINGSNarrativeDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#BORROWINGSNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/BORROWINGSNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_01a0020e-cd1a-7aea-bd1f-6dcddd06ed9b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_DebtInstrumentTable_01a0020e-cd1a-7aea-bd1f-6dcddd06ed9b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01a0020e-cd1a-7c6a-833a-657c407831e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a0020e-cd1a-7aea-bd1f-6dcddd06ed9b" xlink:to="loc_us-gaap_DebtInstrumentAxis_01a0020e-cd1a-7c6a-833a-657c407831e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a0020e-cd1a-7c6a-833a-657c407831e1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a0020e-cd1a-7c6a-833a-657c407831e1" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a0020e-cd1a-7c6a-833a-657c407831e1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a0020e-cd1a-7bf8-aa1c-6a1c8ea9e82c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a0020e-cd1a-7c6a-833a-657c407831e1" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a0020e-cd1a-7bf8-aa1c-6a1c8ea9e82c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_A5.00ConvertibleSeniorNotesMember_01a06022-30cb-7de4-84b2-036c48cfa010" xlink:href="nxh-20260930.xsd#nxh_A5.00ConvertibleSeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a0020e-cd1a-7bf8-aa1c-6a1c8ea9e82c" xlink:to="loc_nxh_A5.00ConvertibleSeniorNotesMember_01a06022-30cb-7de4-84b2-036c48cfa010" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BMOLoanAndSecurityAgreementMember_01a0020e-cd1a-77a5-b793-f94c3eda9646" xlink:href="nxh-20260930.xsd#nxh_BMOLoanAndSecurityAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a0020e-cd1a-7bf8-aa1c-6a1c8ea9e82c" xlink:to="loc_nxh_BMOLoanAndSecurityAgreementMember_01a0020e-cd1a-77a5-b793-f94c3eda9646" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BankOfAmericaRevolverMember_01a0020e-cd1a-7dbd-95c3-352218cda496" xlink:href="nxh-20260930.xsd#nxh_BankOfAmericaRevolverMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a0020e-cd1a-7bf8-aa1c-6a1c8ea9e82c" xlink:to="loc_nxh_BankOfAmericaRevolverMember_01a0020e-cd1a-7dbd-95c3-352218cda496" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_EclipseExitABLCreditFacilityMember_01a1627a-c09b-733a-97b6-0b783a3a8528" xlink:href="nxh-20260930.xsd#nxh_EclipseExitABLCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a0020e-cd1a-7bf8-aa1c-6a1c8ea9e82c" xlink:to="loc_nxh_EclipseExitABLCreditFacilityMember_01a1627a-c09b-733a-97b6-0b783a3a8528" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_A2019OriginalRevolvingFacilityMember_01a16476-bc42-73e3-bcc0-208d3c791368" xlink:href="nxh-20260930.xsd#nxh_A2019OriginalRevolvingFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a0020e-cd1a-7bf8-aa1c-6a1c8ea9e82c" xlink:to="loc_nxh_A2019OriginalRevolvingFacilityMember_01a16476-bc42-73e3-bcc0-208d3c791368" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_A2019ElfaRevolvingFacilitiesMember_01a16479-8da2-7d0c-94bc-e736778d3e63" xlink:href="nxh-20260930.xsd#nxh_A2019ElfaRevolvingFacilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a0020e-cd1a-7bf8-aa1c-6a1c8ea9e82c" xlink:to="loc_nxh_A2019ElfaRevolvingFacilitiesMember_01a16479-8da2-7d0c-94bc-e736778d3e63" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TermLoanFacilityMember_01a1647a-d3e5-727d-8dc6-281159f01c5a" xlink:href="nxh-20260930.xsd#nxh_TermLoanFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a0020e-cd1a-7bf8-aa1c-6a1c8ea9e82c" xlink:to="loc_nxh_TermLoanFacilityMember_01a1647a-d3e5-727d-8dc6-281159f01c5a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a0020e-cd1a-72df-a584-f2f0c1c1d673" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a0020e-cd1a-7aea-bd1f-6dcddd06ed9b" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a0020e-cd1a-72df-a584-f2f0c1c1d673" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a0020e-cd1a-72df-a584-f2f0c1c1d673_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a0020e-cd1a-72df-a584-f2f0c1c1d673" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a0020e-cd1a-72df-a584-f2f0c1c1d673_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a0020e-cd1a-7bdd-889c-bf678008ac1a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a0020e-cd1a-72df-a584-f2f0c1c1d673" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a0020e-cd1a-7bdd-889c-bf678008ac1a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtMember_01a06022-30cb-7168-a523-b7cdaf63b035" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConvertibleDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a0020e-cd1a-7bdd-889c-bf678008ac1a" xlink:to="loc_us-gaap_ConvertibleDebtMember_01a06022-30cb-7168-a523-b7cdaf63b035" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_01a0020e-cd1a-74df-8475-3a8e58c1e270" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a0020e-cd1a-7bdd-889c-bf678008ac1a" xlink:to="loc_us-gaap_LineOfCreditMember_01a0020e-cd1a-74df-8475-3a8e58c1e270" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_01a0020e-cd1a-7e54-a057-c238b759efeb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a0020e-cd1a-7aea-bd1f-6dcddd06ed9b" xlink:to="loc_us-gaap_CreditFacilityAxis_01a0020e-cd1a-7e54-a057-c238b759efeb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a0020e-cd1a-7e54-a057-c238b759efeb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_01a0020e-cd1a-7e54-a057-c238b759efeb" xlink:to="loc_us-gaap_CreditFacilityDomain_01a0020e-cd1a-7e54-a057-c238b759efeb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a0020e-cd1a-7a55-9db4-04cb30418c81" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_01a0020e-cd1a-7e54-a057-c238b759efeb" xlink:to="loc_us-gaap_CreditFacilityDomain_01a0020e-cd1a-7a55-9db4-04cb30418c81" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_01a0020e-cd1a-7c32-8827-c15ba1611ae3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a0020e-cd1a-7a55-9db4-04cb30418c81" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_01a0020e-cd1a-7c32-8827-c15ba1611ae3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_01a1647a-3ca7-7e40-973e-17645d41a024" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a0020e-cd1a-7a55-9db4-04cb30418c81" xlink:to="loc_us-gaap_SecuredDebtMember_01a1647a-3ca7-7e40-973e-17645d41a024" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_01a0020e-cd1a-7cc2-a070-762f7741e4a1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a0020e-cd1a-7aea-bd1f-6dcddd06ed9b" xlink:to="loc_us-gaap_VariableRateAxis_01a0020e-cd1a-7cc2-a070-762f7741e4a1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_01a0020e-cd1a-7cc2-a070-762f7741e4a1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_01a0020e-cd1a-7cc2-a070-762f7741e4a1" xlink:to="loc_us-gaap_VariableRateDomain_01a0020e-cd1a-7cc2-a070-762f7741e4a1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_01a0020e-cd1a-7963-bd70-f459e5966356" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_01a0020e-cd1a-7cc2-a070-762f7741e4a1" xlink:to="loc_us-gaap_VariableRateDomain_01a0020e-cd1a-7963-bd70-f459e5966356" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalFundsEffectiveSwapRateMember_01a0020e-cd1a-73a5-85eb-097e96e95831" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FederalFundsEffectiveSwapRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_01a0020e-cd1a-7963-bd70-f459e5966356" xlink:to="loc_us-gaap_FederalFundsEffectiveSwapRateMember_01a0020e-cd1a-73a5-85eb-097e96e95831" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredOvernightFinancingRateSofrMember_01a0020e-cd1a-7cc7-a788-728b1b9343af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredOvernightFinancingRateSofrMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_01a0020e-cd1a-7963-bd70-f459e5966356" xlink:to="loc_us-gaap_SecuredOvernightFinancingRateSofrMember_01a0020e-cd1a-7cc7-a788-728b1b9343af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_DebtInstrumentCommitmentFeeAxis_01a0020e-cd1a-78e4-a00d-f8178bde903b" xlink:href="nxh-20260930.xsd#nxh_DebtInstrumentCommitmentFeeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a0020e-cd1a-7aea-bd1f-6dcddd06ed9b" xlink:to="loc_nxh_DebtInstrumentCommitmentFeeAxis_01a0020e-cd1a-78e4-a00d-f8178bde903b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_DebtInstrumentCommitmentFeeDomain_01a0020e-cd1a-78e4-a00d-f8178bde903b_default" xlink:href="nxh-20260930.xsd#nxh_DebtInstrumentCommitmentFeeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_nxh_DebtInstrumentCommitmentFeeAxis_01a0020e-cd1a-78e4-a00d-f8178bde903b" xlink:to="loc_nxh_DebtInstrumentCommitmentFeeDomain_01a0020e-cd1a-78e4-a00d-f8178bde903b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_DebtInstrumentCommitmentFeeDomain_01a0020e-cd1a-7659-bf54-66d41b022f10" xlink:href="nxh-20260930.xsd#nxh_DebtInstrumentCommitmentFeeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_nxh_DebtInstrumentCommitmentFeeAxis_01a0020e-cd1a-78e4-a00d-f8178bde903b" xlink:to="loc_nxh_DebtInstrumentCommitmentFeeDomain_01a0020e-cd1a-7659-bf54-66d41b022f10" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_GreaterThan50OfTotalCommitmentAmountMember_01a0020e-cd1a-7cbd-9e5a-b8d4b8b1c3ab" xlink:href="nxh-20260930.xsd#nxh_GreaterThan50OfTotalCommitmentAmountMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_nxh_DebtInstrumentCommitmentFeeDomain_01a0020e-cd1a-7659-bf54-66d41b022f10" xlink:to="loc_nxh_GreaterThan50OfTotalCommitmentAmountMember_01a0020e-cd1a-7cbd-9e5a-b8d4b8b1c3ab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_OtherScenarioMember_01a0020e-cd1a-73af-ad70-ac46ff2a86d0" xlink:href="nxh-20260930.xsd#nxh_OtherScenarioMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_nxh_DebtInstrumentCommitmentFeeDomain_01a0020e-cd1a-7659-bf54-66d41b022f10" xlink:to="loc_nxh_OtherScenarioMember_01a0020e-cd1a-73af-ad70-ac46ff2a86d0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_DebtInterestRateScenarioAxis_01a0602c-a11c-7ce7-b4cb-45b167049bea" xlink:href="nxh-20260930.xsd#nxh_DebtInterestRateScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a0020e-cd1a-7aea-bd1f-6dcddd06ed9b" xlink:to="loc_nxh_DebtInterestRateScenarioAxis_01a0602c-a11c-7ce7-b4cb-45b167049bea" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_DebtInterestRateScenarioDomain_01a0602c-a11c-7ce7-b4cb-45b167049bea_default" xlink:href="nxh-20260930.xsd#nxh_DebtInterestRateScenarioDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_nxh_DebtInterestRateScenarioAxis_01a0602c-a11c-7ce7-b4cb-45b167049bea" xlink:to="loc_nxh_DebtInterestRateScenarioDomain_01a0602c-a11c-7ce7-b4cb-45b167049bea_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_DebtInterestRateScenarioDomain_01a0602c-a11c-70ea-8c3e-fc9e4eb6ec1d" xlink:href="nxh-20260930.xsd#nxh_DebtInterestRateScenarioDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_nxh_DebtInterestRateScenarioAxis_01a0602c-a11c-7ce7-b4cb-45b167049bea" xlink:to="loc_nxh_DebtInterestRateScenarioDomain_01a0602c-a11c-70ea-8c3e-fc9e4eb6ec1d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_DebtInterestRateScenarioOneMember_01a0602c-a11c-7dc9-8e60-adb568a70ef3" xlink:href="nxh-20260930.xsd#nxh_DebtInterestRateScenarioOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_nxh_DebtInterestRateScenarioDomain_01a0602c-a11c-70ea-8c3e-fc9e4eb6ec1d" xlink:to="loc_nxh_DebtInterestRateScenarioOneMember_01a0602c-a11c-7dc9-8e60-adb568a70ef3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_DebtInterestRateScenarioTwoMember_01a0602c-cb44-7c38-935a-e63fd72f7e33" xlink:href="nxh-20260930.xsd#nxh_DebtInterestRateScenarioTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_nxh_DebtInterestRateScenarioDomain_01a0602c-a11c-70ea-8c3e-fc9e4eb6ec1d" xlink:to="loc_nxh_DebtInterestRateScenarioTwoMember_01a0602c-cb44-7c38-935a-e63fd72f7e33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a15533-e446-7fe8-aa13-a4a1e48f1194" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a0020e-cd1a-7aea-bd1f-6dcddd06ed9b" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a15533-e446-7fe8-aa13-a4a1e48f1194" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a15533-e446-7fe8-aa13-a4a1e48f1194_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a15533-e446-7fe8-aa13-a4a1e48f1194" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a15533-e446-7fe8-aa13-a4a1e48f1194_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a15533-e446-78bb-85d6-b7fb6cfdb40c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a15533-e446-7fe8-aa13-a4a1e48f1194" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a15533-e446-78bb-85d6-b7fb6cfdb40c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TheContainerStoreHoldingsLLCMember_01a15533-e446-72b6-a4b6-66d2bec4f803" xlink:href="nxh-20260930.xsd#nxh_TheContainerStoreHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a15533-e446-78bb-85d6-b7fb6cfdb40c" xlink:to="loc_nxh_TheContainerStoreHoldingsLLCMember_01a15533-e446-72b6-a4b6-66d2bec4f803" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_01a16475-7610-7d28-95cf-2484b78a1b69" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a0020e-cd1a-7aea-bd1f-6dcddd06ed9b" xlink:to="loc_dei_LegalEntityAxis_01a16475-7610-7d28-95cf-2484b78a1b69" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a16475-7610-7d28-95cf-2484b78a1b69_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_01a16475-7610-7d28-95cf-2484b78a1b69" xlink:to="loc_dei_EntityDomain_01a16475-7610-7d28-95cf-2484b78a1b69_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a16475-7610-76b6-ab68-c5f8436f1362" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_01a16475-7610-7d28-95cf-2484b78a1b69" xlink:to="loc_dei_EntityDomain_01a16475-7610-76b6-ab68-c5f8436f1362" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ElfaInternationalABMember_01a16475-dc56-7c98-9a49-a5b92c992de4" xlink:href="nxh-20260930.xsd#nxh_ElfaInternationalABMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_01a16475-7610-76b6-ab68-c5f8436f1362" xlink:to="loc_nxh_ElfaInternationalABMember_01a16475-dc56-7c98-9a49-a5b92c992de4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ConvertibleDebtScenarioAxis_01a19d94-578e-7e7c-95dc-484e67b6aa67" xlink:href="nxh-20260930.xsd#nxh_ConvertibleDebtScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a0020e-cd1a-7aea-bd1f-6dcddd06ed9b" xlink:to="loc_nxh_ConvertibleDebtScenarioAxis_01a19d94-578e-7e7c-95dc-484e67b6aa67" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ConvertibleDebtScenarioDomain_01a19d94-578e-7e7c-95dc-484e67b6aa67_default" xlink:href="nxh-20260930.xsd#nxh_ConvertibleDebtScenarioDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_nxh_ConvertibleDebtScenarioAxis_01a19d94-578e-7e7c-95dc-484e67b6aa67" xlink:to="loc_nxh_ConvertibleDebtScenarioDomain_01a19d94-578e-7e7c-95dc-484e67b6aa67_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ConvertibleDebtScenarioDomain_01a19d94-578e-7116-893a-5c72fde29d32" xlink:href="nxh-20260930.xsd#nxh_ConvertibleDebtScenarioDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_nxh_ConvertibleDebtScenarioAxis_01a19d94-578e-7e7c-95dc-484e67b6aa67" xlink:to="loc_nxh_ConvertibleDebtScenarioDomain_01a19d94-578e-7116-893a-5c72fde29d32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_InitialConversionRateMember_01a19d94-85ef-7ddd-8a6b-584b4afd3600" xlink:href="nxh-20260930.xsd#nxh_InitialConversionRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_nxh_ConvertibleDebtScenarioDomain_01a19d94-578e-7116-893a-5c72fde29d32" xlink:to="loc_nxh_InitialConversionRateMember_01a19d94-85ef-7ddd-8a6b-584b4afd3600" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_MakeWholeFundamentalChangeConversionRatioMember_01a19d95-32a6-703e-a105-149a52dc7b15" xlink:href="nxh-20260930.xsd#nxh_MakeWholeFundamentalChangeConversionRatioMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_nxh_ConvertibleDebtScenarioDomain_01a19d94-578e-7116-893a-5c72fde29d32" xlink:to="loc_nxh_MakeWholeFundamentalChangeConversionRatioMember_01a19d95-32a6-703e-a105-149a52dc7b15" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_01a0020e-cd1a-7f07-b40c-41a30a6ae68c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_01a0020e-cd1a-7f07-b40c-41a30a6ae68c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_01a0020e-cd1a-7981-ac2a-66235507e7bf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_01a0020e-cd1a-7981-ac2a-66235507e7bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleConversionRatio1_01a06025-ab15-7bbb-ac0d-3ebcd834b8bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentConvertibleConversionRatio1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_DebtInstrumentConvertibleConversionRatio1_01a06025-ab15-7bbb-ac0d-3ebcd834b8bc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_01a06026-23cf-7fae-87ea-9ef7bf260b3d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentConvertibleConversionPrice1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_01a06026-23cf-7fae-87ea-9ef7bf260b3d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_DebtInstrumentConvertibleDebtMaximumNumberOfSharesIssuableUponConversionAsAPercentageOfCommonStockOutstanding_01a17955-971c-7f03-864b-f531c46e6c41" xlink:href="nxh-20260930.xsd#nxh_DebtInstrumentConvertibleDebtMaximumNumberOfSharesIssuableUponConversionAsAPercentageOfCommonStockOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_nxh_DebtInstrumentConvertibleDebtMaximumNumberOfSharesIssuableUponConversionAsAPercentageOfCommonStockOutstanding_01a17955-971c-7f03-864b-f531c46e6c41" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_01a06028-74bd-71d6-89fc-780a63848872" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_01a06028-74bd-71d6-89fc-780a63848872" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_01a16979-351a-7926-b7e6-7279cca45edc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_01a16979-351a-7926-b7e6-7279cca45edc" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedDerivativeLiability_01a1697b-9312-7f34-bbcf-ae7dc21642b8" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationRecognizedLiabilityAssumedDerivativeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedDerivativeLiability_01a1697b-9312-7f34-bbcf-ae7dc21642b8" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedLongTermDebt_01a1697c-986b-706a-9c66-f12e7882bc13" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationRecognizedLiabilityAssumedLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedLongTermDebt_01a1697c-986b-706a-9c66-f12e7882bc13" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedDebtDiscount_01a1697d-c10b-7a64-a412-fcc34588576e" xlink:href="nxh-20260930.xsd#nxh_BusinessCombinationRecognizedLiabilityAssumedDebtDiscount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_nxh_BusinessCombinationRecognizedLiabilityAssumedDebtDiscount_01a1697d-c10b-7a64-a412-fcc34588576e" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_01a1697f-9574-7528-a307-1ec751002e13" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_01a1697f-9574-7528-a307-1ec751002e13" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a1697f-fe50-700f-9951-d363447a4f8a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a1697f-fe50-700f-9951-d363447a4f8a" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ReclassificationFromDerivativeLiabilityToEquity_01a1621d-5009-7a1b-81c4-2639ec0e4286" xlink:href="nxh-20260930.xsd#nxh_ReclassificationFromDerivativeLiabilityToEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_nxh_ReclassificationFromDerivativeLiabilityToEquity_01a1621d-5009-7a1b-81c4-2639ec0e4286" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_01a177d1-ec09-7d44-acf5-7452ec9130e3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_01a177d1-ec09-7d44-acf5-7452ec9130e3" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_01a16221-40ba-7678-b55b-676426f61802" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_01a16221-40ba-7678-b55b-676426f61802" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_01a177d0-5304-7f80-ae4f-dde54a182aaf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_LongTermDebt_01a177d0-5304-7f80-ae4f-dde54a182aaf" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt_01a0020e-cd1a-7ccf-a2de-c87f7b7c508b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_InterestExpenseDebt_01a0020e-cd1a-7ccf-a2de-c87f7b7c508b" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_01a16222-f4b1-714f-aa94-e8f53a735a94" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_01a16222-f4b1-714f-aa94-e8f53a735a94" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_01a0020e-cd1a-7547-a3b4-10e95722977e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_01a0020e-cd1a-7547-a3b4-10e95722977e" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_01a16238-dc0e-7ca8-a38b-59b3e62638b0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_01a16238-dc0e-7ca8-a38b-59b3e62638b0" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_01a0020e-cd1a-75b3-aa1e-379f8d571e08" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_01a0020e-cd1a-75b3-aa1e-379f8d571e08" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_DebtInstrumentCovenantMinimumAvailabilityOfBorrowingBasedAndAggregateCommitmentsPercentage_01a1623d-f6b1-7769-9cc1-336a53ae9034" xlink:href="nxh-20260930.xsd#nxh_DebtInstrumentCovenantMinimumAvailabilityOfBorrowingBasedAndAggregateCommitmentsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_nxh_DebtInstrumentCovenantMinimumAvailabilityOfBorrowingBasedAndAggregateCommitmentsPercentage_01a1623d-f6b1-7769-9cc1-336a53ae9034" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_DebtInstrumentCovenantMinimumGroupEquityRatio_01a1647f-2a2d-754a-8f9f-ab2935cc335e" xlink:href="nxh-20260930.xsd#nxh_DebtInstrumentCovenantMinimumGroupEquityRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_nxh_DebtInstrumentCovenantMinimumGroupEquityRatio_01a1647f-2a2d-754a-8f9f-ab2935cc335e" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_DebtInstrumentCovenantConsolidatedRatioOfNetDebtToEBITDA_01a1625a-035b-7743-8304-6a2fe5db00fe" xlink:href="nxh-20260930.xsd#nxh_DebtInstrumentCovenantConsolidatedRatioOfNetDebtToEBITDA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_nxh_DebtInstrumentCovenantConsolidatedRatioOfNetDebtToEBITDA_01a1625a-035b-7743-8304-6a2fe5db00fe" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_01a0020e-cd1a-789f-8fe8-8c70a940a414" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_DebtInstrumentTerm_01a0020e-cd1a-789f-8fe8-8c70a940a414" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_01a0020e-cd1a-78b7-ab1d-6635f8d75fed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LettersOfCreditOutstandingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_01a0020e-cd1a-78b7-ab1d-6635f8d75fed" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_DebtInstrumentInterestPeriod_01a0020e-cd1a-7c5e-a89a-44b29c240d17" xlink:href="nxh-20260930.xsd#nxh_DebtInstrumentInterestPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_nxh_DebtInstrumentInterestPeriod_01a0020e-cd1a-7c5e-a89a-44b29c240d17" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_DebtCovenantCashCollateralPercentGreaterThanAggregateCommitment_01a0020e-cd1a-71b5-86a8-eb0a6a8a9a43" xlink:href="nxh-20260930.xsd#nxh_DebtCovenantCashCollateralPercentGreaterThanAggregateCommitment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_nxh_DebtCovenantCashCollateralPercentGreaterThanAggregateCommitment_01a0020e-cd1a-71b5-86a8-eb0a6a8a9a43" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromLinesOfCredit_01a0020e-cd1a-78de-8113-563b709b11ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromLinesOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_ProceedsFromLinesOfCredit_01a0020e-cd1a-78de-8113-563b709b11ff" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLinesOfCredit_01a0020e-cd1a-750b-9950-9ec07e106396" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfLinesOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_RepaymentsOfLinesOfCredit_01a0020e-cd1a-750b-9950-9ec07e106396" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_01a0020e-cd1a-73cf-ab78-8c5f421b9ae5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_01a0020e-cd1a-73cf-ab78-8c5f421b9ae5" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_01a1a285-1fee-73b5-a3db-fdb47c360a51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a0020e-cd1a-7c4b-b98c-e51affc08e25" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_01a1a285-1fee-73b5-a3db-fdb47c360a51" xlink:type="arc" order="31"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/LEASESNarrativeDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#LEASESNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/LEASESNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_01a0020e-cd1a-70f1-9008-dd086ed5ef7e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_01a0020e-cd1a-7998-8abc-2129b7a6417f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_01a0020e-cd1a-70f1-9008-dd086ed5ef7e" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_01a0020e-cd1a-7998-8abc-2129b7a6417f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a0020e-cd1a-7133-8193-32e8b95a32b5" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_01a0020e-cd1a-7998-8abc-2129b7a6417f" xlink:to="loc_srt_RangeAxis_01a0020e-cd1a-7133-8193-32e8b95a32b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a0020e-cd1a-7133-8193-32e8b95a32b5_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a0020e-cd1a-7133-8193-32e8b95a32b5" xlink:to="loc_srt_RangeMember_01a0020e-cd1a-7133-8193-32e8b95a32b5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a0020e-cd1a-7e3a-b29f-c09646f36a1f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a0020e-cd1a-7133-8193-32e8b95a32b5" xlink:to="loc_srt_RangeMember_01a0020e-cd1a-7e3a-b29f-c09646f36a1f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a0020e-cd1a-72c7-a61c-23d3644bec3f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a0020e-cd1a-7e3a-b29f-c09646f36a1f" xlink:to="loc_srt_MinimumMember_01a0020e-cd1a-72c7-a61c-23d3644bec3f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a0020e-cd1a-7c7f-8fc9-c34bbe185db7" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a0020e-cd1a-7e3a-b29f-c09646f36a1f" xlink:to="loc_srt_MaximumMember_01a0020e-cd1a-7c7f-8fc9-c34bbe185db7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseRemainingLeaseTerm_01a0020e-cd1a-7b6d-9e1f-536a0e8e619e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseRemainingLeaseTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_01a0020e-cd1a-70f1-9008-dd086ed5ef7e" xlink:to="loc_us-gaap_LesseeOperatingLeaseRemainingLeaseTerm_01a0020e-cd1a-7b6d-9e1f-536a0e8e619e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseImpairmentLoss_01a0020e-cd1a-79eb-9fc1-d4a52b3a5ee2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_01a0020e-cd1a-70f1-9008-dd086ed5ef7e" xlink:to="loc_us-gaap_OperatingLeaseImpairmentLoss_01a0020e-cd1a-79eb-9fc1-d4a52b3a5ee2" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/COMMITMENTSANDCONTINGENCIESDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#COMMITMENTSANDCONTINGENCIESDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/COMMITMENTSANDCONTINGENCIESDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsLineItems_01a0020e-cd1a-71e2-bd51-eb88a158a0ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsTable_01a0020e-cd1a-7e3d-a87c-a7f18ad20f32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_01a0020e-cd1a-71e2-bd51-eb88a158a0ba" xlink:to="loc_us-gaap_OtherCommitmentsTable_01a0020e-cd1a-7e3d-a87c-a7f18ad20f32" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainContingenciesByNatureAxis_01a0020e-cd1a-75dd-ab72-18296ce64921" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainContingenciesByNatureAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_01a0020e-cd1a-7e3d-a87c-a7f18ad20f32" xlink:to="loc_us-gaap_GainContingenciesByNatureAxis_01a0020e-cd1a-75dd-ab72-18296ce64921" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainContingencyNatureDomain_01a0020e-cd1a-75dd-ab72-18296ce64921_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GainContingenciesByNatureAxis_01a0020e-cd1a-75dd-ab72-18296ce64921" xlink:to="loc_us-gaap_GainContingencyNatureDomain_01a0020e-cd1a-75dd-ab72-18296ce64921_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainContingencyNatureDomain_01a0020e-cd1a-7a48-a67a-b8708c694d97" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GainContingenciesByNatureAxis_01a0020e-cd1a-75dd-ab72-18296ce64921" xlink:to="loc_us-gaap_GainContingencyNatureDomain_01a0020e-cd1a-7a48-a67a-b8708c694d97" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_IEEPATariffRefundMember_01a0020e-cd1a-7c1c-b3fd-b475803a227c" xlink:href="nxh-20260930.xsd#nxh_IEEPATariffRefundMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GainContingencyNatureDomain_01a0020e-cd1a-7a48-a67a-b8708c694d97" xlink:to="loc_nxh_IEEPATariffRefundMember_01a0020e-cd1a-7c1c-b3fd-b475803a227c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RecoveryOfDirectCosts_01a0020e-cd1a-7121-a877-d72b678a6509" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RecoveryOfDirectCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_01a0020e-cd1a-71e2-bd51-eb88a158a0ba" xlink:to="loc_us-gaap_RecoveryOfDirectCosts_01a0020e-cd1a-7121-a877-d72b678a6509" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_AmountedReceivedForRecoveryOfImportDuties_01a1a727-fcd6-711d-9e54-fd9a275c1137" xlink:href="nxh-20260930.xsd#nxh_AmountedReceivedForRecoveryOfImportDuties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_01a0020e-cd1a-71e2-bd51-eb88a158a0ba" xlink:to="loc_nxh_AmountedReceivedForRecoveryOfImportDuties_01a1a727-fcd6-711d-9e54-fd9a275c1137" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableForRecoveryOfImportDutiesNet_01a0020e-cd1a-7af1-9358-ee5fa9371283" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReceivableForRecoveryOfImportDutiesNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_01a0020e-cd1a-71e2-bd51-eb88a158a0ba" xlink:to="loc_us-gaap_ReceivableForRecoveryOfImportDutiesNet_01a0020e-cd1a-7af1-9358-ee5fa9371283" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_01a0020e-cd1a-725c-9039-5b17017e7f33" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_01a0020e-cd1a-71e2-bd51-eb88a158a0ba" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_01a0020e-cd1a-725c-9039-5b17017e7f33" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/STOCKHOLDERSEQUITYJonesTradingDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#STOCKHOLDERSEQUITYJonesTradingDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/STOCKHOLDERSEQUITYJonesTradingDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_01a0020e-cd1a-76d3-9263-f74e6fdb8d82" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_01a0020e-cd1a-7541-bcbc-b052d20d169f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a0020e-cd1a-76d3-9263-f74e6fdb8d82" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_01a0020e-cd1a-7541-bcbc-b052d20d169f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_01a0020e-cd1a-7efa-8818-e5466df30ab1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a0020e-cd1a-7541-bcbc-b052d20d169f" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_01a0020e-cd1a-7efa-8818-e5466df30ab1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a0020e-cd1a-7efa-8818-e5466df30ab1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_01a0020e-cd1a-7efa-8818-e5466df30ab1" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a0020e-cd1a-7efa-8818-e5466df30ab1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a0020e-cd1a-7fcd-bee4-b0dfc03a33b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_01a0020e-cd1a-7efa-8818-e5466df30ab1" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a0020e-cd1a-7fcd-bee4-b0dfc03a33b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_June2024SalesAgreementMember_01a0d8bc-5122-7730-b45f-9d44a8934921" xlink:href="nxh-20260930.xsd#nxh_June2024SalesAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a0020e-cd1a-7fcd-bee4-b0dfc03a33b3" xlink:to="loc_nxh_June2024SalesAgreementMember_01a0d8bc-5122-7730-b45f-9d44a8934921" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_August2026SalesAgreementMember_01a0d8bd-29ea-76f4-accd-ec258b21b159" xlink:href="nxh-20260930.xsd#nxh_August2026SalesAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a0020e-cd1a-7fcd-bee4-b0dfc03a33b3" xlink:to="loc_nxh_August2026SalesAgreementMember_01a0d8bd-29ea-76f4-accd-ec258b21b159" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_01a1698b-0d4b-7e60-a631-125c52f5f072" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a0020e-cd1a-7541-bcbc-b052d20d169f" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_01a1698b-0d4b-7e60-a631-125c52f5f072" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01a1698b-0d4b-7e60-a631-125c52f5f072_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_01a1698b-0d4b-7e60-a631-125c52f5f072" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01a1698b-0d4b-7e60-a631-125c52f5f072_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01a1698b-0d4b-7a8d-a933-f0d6bf0915e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_01a1698b-0d4b-7e60-a631-125c52f5f072" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01a1698b-0d4b-7a8d-a933-f0d6bf0915e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_01a1698b-0d4b-7aa2-ac6e-36e7a2569809" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_01a1698b-0d4b-7a8d-a933-f0d6bf0915e6" xlink:to="loc_us-gaap_SubsequentEventMember_01a1698b-0d4b-7aa2-ac6e-36e7a2569809" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_01a0020e-cd1a-7a7b-aa1e-c8d8f418d810" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a0020e-cd1a-76d3-9263-f74e6fdb8d82" xlink:to="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_01a0020e-cd1a-7a7b-aa1e-c8d8f418d810" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_01a0020e-cd1a-7d23-a7dd-aec40a17b43e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a0020e-cd1a-76d3-9263-f74e6fdb8d82" xlink:to="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_01a0020e-cd1a-7d23-a7dd-aec40a17b43e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfStockIssuanceCosts_01a0020e-cd1a-7824-8305-653e5ebbc8b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsOfStockIssuanceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a0020e-cd1a-76d3-9263-f74e6fdb8d82" xlink:to="loc_us-gaap_PaymentsOfStockIssuanceCosts_01a0020e-cd1a-7824-8305-653e5ebbc8b3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_SaleOfStockOutstandingAmountAvailable_01a0020e-cd1a-75cb-bbeb-a3e5e1689db5" xlink:href="nxh-20260930.xsd#nxh_SaleOfStockOutstandingAmountAvailable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a0020e-cd1a-76d3-9263-f74e6fdb8d82" xlink:to="loc_nxh_SaleOfStockOutstandingAmountAvailable_01a0020e-cd1a-75cb-bbeb-a3e5e1689db5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_SaleOfStockStockApprovedForOfferingAggregateAmount_01a1698b-0d4b-72b7-ba5a-b01b49ce1eee" xlink:href="nxh-20260930.xsd#nxh_SaleOfStockStockApprovedForOfferingAggregateAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a0020e-cd1a-76d3-9263-f74e6fdb8d82" xlink:to="loc_nxh_SaleOfStockStockApprovedForOfferingAggregateAmount_01a1698b-0d4b-72b7-ba5a-b01b49ce1eee" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/STOCKHOLDERSEQUITYDerivativeDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#STOCKHOLDERSEQUITYDerivativeDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/STOCKHOLDERSEQUITYDerivativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_01a1553e-8f06-7eea-9bc3-245af9136c3b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_01a1553e-8f06-76f4-9a29-294f1369dda7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a1553e-8f06-7eea-9bc3-245af9136c3b" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_01a1553e-8f06-76f4-9a29-294f1369dda7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a1553e-8f06-779d-b161-ce820c61d041" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a1553e-8f06-76f4-9a29-294f1369dda7" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a1553e-8f06-779d-b161-ce820c61d041" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a1553e-8f06-779d-b161-ce820c61d041_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a1553e-8f06-779d-b161-ce820c61d041" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a1553e-8f06-779d-b161-ce820c61d041_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a1553e-8f06-7221-bc46-0a065196b53c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a1553e-8f06-779d-b161-ce820c61d041" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a1553e-8f06-7221-bc46-0a065196b53c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_TheContainerStoreHoldingsLLCMember_01a1553e-8f06-7896-8eef-782a88a28669" xlink:href="nxh-20260930.xsd#nxh_TheContainerStoreHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a1553e-8f06-7221-bc46-0a065196b53c" xlink:to="loc_nxh_TheContainerStoreHoldingsLLCMember_01a1553e-8f06-7896-8eef-782a88a28669" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a1553e-8f06-7556-abc8-03ac97a6e357" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a1553e-8f06-76f4-9a29-294f1369dda7" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a1553e-8f06-7556-abc8-03ac97a6e357" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a1553e-8f06-7556-abc8-03ac97a6e357_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a1553e-8f06-7556-abc8-03ac97a6e357" xlink:to="loc_us-gaap_EquityComponentDomain_01a1553e-8f06-7556-abc8-03ac97a6e357_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a1553e-8f06-7bbc-bac0-91ca6d378e30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a1553e-8f06-7556-abc8-03ac97a6e357" xlink:to="loc_us-gaap_EquityComponentDomain_01a1553e-8f06-7bbc-bac0-91ca6d378e30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_01a1553e-8f06-7174-aa1a-360e4e6909ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a1553e-8f06-7bbc-bac0-91ca6d378e30" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_01a1553e-8f06-7174-aa1a-360e4e6909ff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_AdjustmentsToAdditionalPaidInCapitalReclassificationOfConvertibleDebtConversionFeatureToEquity_01a1553e-8f06-74c5-a8ec-bc5d94c8fb84" xlink:href="nxh-20260930.xsd#nxh_AdjustmentsToAdditionalPaidInCapitalReclassificationOfConvertibleDebtConversionFeatureToEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a1553e-8f06-7eea-9bc3-245af9136c3b" xlink:to="loc_nxh_AdjustmentsToAdditionalPaidInCapitalReclassificationOfConvertibleDebtConversionFeatureToEquity_01a1553e-8f06-74c5-a8ec-bc5d94c8fb84" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSSDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#ACCUMULATEDOTHERCOMPREHENSIVELOSSDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSSDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a0c486-145a-700b-b76c-175b1be29b3e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_01a0c486-145a-701e-9242-3f428fcce466" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a0c486-145a-700b-b76c-175b1be29b3e" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_01a0c486-145a-701e-9242-3f428fcce466" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a0c486-145a-7529-972a-a26577c8692b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_01a0c486-145a-701e-9242-3f428fcce466" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a0c486-145a-7529-972a-a26577c8692b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a0c486-145a-7529-972a-a26577c8692b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a0c486-145a-7529-972a-a26577c8692b" xlink:to="loc_us-gaap_EquityComponentDomain_01a0c486-145a-7529-972a-a26577c8692b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a0c486-145a-7898-aa92-476e05c84994" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a0c486-145a-7529-972a-a26577c8692b" xlink:to="loc_us-gaap_EquityComponentDomain_01a0c486-145a-7898-aa92-476e05c84994" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a0c48a-c9eb-77a4-a620-8a7d09475cce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a0c486-145a-7898-aa92-476e05c84994" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a0c48a-c9eb-77a4-a620-8a7d09475cce" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a0c487-7a4e-763a-ac55-6f67599ad8c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a0c48a-c9eb-77a4-a620-8a7d09475cce" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a0c487-7a4e-763a-ac55-6f67599ad8c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_01a0c487-bd7b-704e-885d-c0a1c54ddb05" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a0c48a-c9eb-77a4-a620-8a7d09475cce" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_01a0c487-bd7b-704e-885d-c0a1c54ddb05" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AOCIAttributableToParentAbstract_01a0c486-a1c8-7edb-86cd-5025f7f67a15" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AOCIAttributableToParentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a0c486-145a-700b-b76c-175b1be29b3e" xlink:to="loc_us-gaap_AOCIAttributableToParentAbstract_01a0c486-a1c8-7edb-86cd-5025f7f67a15" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a0c486-e82c-7922-b2ef-8332c5c4a360" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentAbstract_01a0c486-a1c8-7edb-86cd-5025f7f67a15" xlink:to="loc_us-gaap_StockholdersEquity_01a0c486-e82c-7922-b2ef-8332c5c4a360" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_01a0c488-b06c-7c15-b160-5ba1c6cd35a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentAbstract_01a0c486-a1c8-7edb-86cd-5025f7f67a15" xlink:to="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_01a0c488-b06c-7c15-b160-5ba1c6cd35a6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_01a0c488-dab0-7195-a60d-4264f5ed6b1a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentAbstract_01a0c486-a1c8-7edb-86cd-5025f7f67a15" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_01a0c488-dab0-7195-a60d-4264f5ed6b1a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_01a0c489-03ba-760f-869f-16a132e841a9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentAbstract_01a0c486-a1c8-7edb-86cd-5025f7f67a15" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_01a0c489-03ba-760f-869f-16a132e841a9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a0c487-2ba9-772e-a986-18a483a4025d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/STOCKBASEDAWARDSSummaryofStockBasedCompensationDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#STOCKBASEDAWARDSSummaryofStockBasedCompensationDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/STOCKBASEDAWARDSSummaryofStockBasedCompensationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a0020e-cd1a-719c-a986-7c1e6f2f778c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a0020e-cd1a-7c81-bfcb-b5796d9ea37b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a0020e-cd1a-719c-a986-7c1e6f2f778c" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a0020e-cd1a-7c81-bfcb-b5796d9ea37b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a0020e-cd1a-7731-9c97-30534acfbcae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfIncomeLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a0020e-cd1a-7c81-bfcb-b5796d9ea37b" xlink:to="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a0020e-cd1a-7731-9c97-30534acfbcae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a0020e-cd1a-7a36-b775-7592c999eb0d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a0020e-cd1a-719c-a986-7c1e6f2f778c" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a0020e-cd1a-7a36-b775-7592c999eb0d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/STOCKBASEDAWARDSSummaryofStockBasedCompensationDetails_1" xlink:type="simple" xlink:href="nxh-20260930.xsd#STOCKBASEDAWARDSSummaryofStockBasedCompensationDetails_1"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/STOCKBASEDAWARDSSummaryofStockBasedCompensationDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a0020e-cd1a-719c-a986-7c1e6f2f778c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a0020e-cd1a-7c81-bfcb-b5796d9ea37b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a0020e-cd1a-719c-a986-7c1e6f2f778c" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a0020e-cd1a-7c81-bfcb-b5796d9ea37b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a0020e-cd1a-7a36-b775-7592c999eb0d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a0020e-cd1a-719c-a986-7c1e6f2f778c" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a0020e-cd1a-7a36-b775-7592c999eb0d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/STOCKBASEDAWARDSNarrativeDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#STOCKBASEDAWARDSNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/STOCKBASEDAWARDSNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7934-82bf-d6e5639a7ae1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a0020e-cd1a-7a04-a45a-6a1b7f47d411" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7934-82bf-d6e5639a7ae1" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a0020e-cd1a-7a04-a45a-6a1b7f47d411" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_01a0020e-cd1a-7de6-bca3-a133124601fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a0020e-cd1a-7a04-a45a-6a1b7f47d411" xlink:to="loc_us-gaap_AwardTypeAxis_01a0020e-cd1a-7de6-bca3-a133124601fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a0020e-cd1a-7de6-bca3-a133124601fc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_01a0020e-cd1a-7de6-bca3-a133124601fc" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a0020e-cd1a-7de6-bca3-a133124601fc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a0020e-cd1a-70c2-b476-8bfc5e1f077a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_01a0020e-cd1a-7de6-bca3-a133124601fc" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a0020e-cd1a-70c2-b476-8bfc5e1f077a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_01a0020e-cd1a-7d86-bb7d-9b2035140140" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a0020e-cd1a-70c2-b476-8bfc5e1f077a" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_01a0020e-cd1a-7d86-bb7d-9b2035140140" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_01a0020e-cd1a-7f27-8917-8d3781aa0311" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a0020e-cd1a-70c2-b476-8bfc5e1f077a" xlink:to="loc_us-gaap_PerformanceSharesMember_01a0020e-cd1a-7f27-8917-8d3781aa0311" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_PerformanceShareOptionsMember_01a0020e-cd1a-7cbc-9c63-14d997a2f4d2" xlink:href="nxh-20260930.xsd#nxh_PerformanceShareOptionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a0020e-cd1a-70c2-b476-8bfc5e1f077a" xlink:to="loc_nxh_PerformanceShareOptionsMember_01a0020e-cd1a-7cbc-9c63-14d997a2f4d2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockMember_01a0020e-cd1a-7ef9-818f-ac0f14ffe6fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a0020e-cd1a-70c2-b476-8bfc5e1f077a" xlink:to="loc_us-gaap_EmployeeStockMember_01a0020e-cd1a-7ef9-818f-ac0f14ffe6fe" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_01a11c04-2491-7a36-92cd-61fbe082dabf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeStockOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a0020e-cd1a-70c2-b476-8bfc5e1f077a" xlink:to="loc_us-gaap_EmployeeStockOptionMember_01a11c04-2491-7a36-92cd-61fbe082dabf" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingAxis_01a0020e-cd1a-7657-8eed-5bda94b8a478" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VestingAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a0020e-cd1a-7a04-a45a-6a1b7f47d411" xlink:to="loc_us-gaap_VestingAxis_01a0020e-cd1a-7657-8eed-5bda94b8a478" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingDomain_01a0020e-cd1a-7657-8eed-5bda94b8a478_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VestingDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VestingAxis_01a0020e-cd1a-7657-8eed-5bda94b8a478" xlink:to="loc_us-gaap_VestingDomain_01a0020e-cd1a-7657-8eed-5bda94b8a478_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingDomain_01a0020e-cd1a-74c4-8abb-2f55b4b8733e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VestingDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VestingAxis_01a0020e-cd1a-7657-8eed-5bda94b8a478" xlink:to="loc_us-gaap_VestingDomain_01a0020e-cd1a-74c4-8abb-2f55b4b8733e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_FirstYearMember_01a0020e-cd1a-7e01-9157-1288a62a7cd8" xlink:href="nxh-20260930.xsd#nxh_FirstYearMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_01a0020e-cd1a-74c4-8abb-2f55b4b8733e" xlink:to="loc_nxh_FirstYearMember_01a0020e-cd1a-7e01-9157-1288a62a7cd8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_SecondYearMember_01a0020e-cd1a-7cfe-8296-6058a2a8e4e8" xlink:href="nxh-20260930.xsd#nxh_SecondYearMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_01a0020e-cd1a-74c4-8abb-2f55b4b8733e" xlink:to="loc_nxh_SecondYearMember_01a0020e-cd1a-7cfe-8296-6058a2a8e4e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ThirdYearMember_01a0020e-cd1a-7a45-9fc3-2cb0b20d16de" xlink:href="nxh-20260930.xsd#nxh_ThirdYearMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_01a0020e-cd1a-74c4-8abb-2f55b4b8733e" xlink:to="loc_nxh_ThirdYearMember_01a0020e-cd1a-7a45-9fc3-2cb0b20d16de" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a0020e-cd1a-74bf-bbe2-4c4545200929" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a0020e-cd1a-7a04-a45a-6a1b7f47d411" xlink:to="loc_srt_RangeAxis_01a0020e-cd1a-74bf-bbe2-4c4545200929" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a0020e-cd1a-74bf-bbe2-4c4545200929_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a0020e-cd1a-74bf-bbe2-4c4545200929" xlink:to="loc_srt_RangeMember_01a0020e-cd1a-74bf-bbe2-4c4545200929_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a0020e-cd1a-7af6-8bba-abc09cf5d806" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a0020e-cd1a-74bf-bbe2-4c4545200929" xlink:to="loc_srt_RangeMember_01a0020e-cd1a-7af6-8bba-abc09cf5d806" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a0020e-cd1a-7fa9-a887-af13652f92fa" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a0020e-cd1a-7af6-8bba-abc09cf5d806" xlink:to="loc_srt_MinimumMember_01a0020e-cd1a-7fa9-a887-af13652f92fa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a0020e-cd1a-71d7-be51-0ff930e24b51" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a0020e-cd1a-7af6-8bba-abc09cf5d806" xlink:to="loc_srt_MaximumMember_01a0020e-cd1a-71d7-be51-0ff930e24b51" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_01a08946-224d-77df-afa3-5184e748573d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a0020e-cd1a-7a04-a45a-6a1b7f47d411" xlink:to="loc_us-gaap_PlanNameAxis_01a08946-224d-77df-afa3-5184e748573d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_01a08946-224d-77df-afa3-5184e748573d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_01a08946-224d-77df-afa3-5184e748573d" xlink:to="loc_us-gaap_PlanNameDomain_01a08946-224d-77df-afa3-5184e748573d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_01a08946-224d-75cd-822a-ffba6db47292" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_01a08946-224d-77df-afa3-5184e748573d" xlink:to="loc_us-gaap_PlanNameDomain_01a08946-224d-75cd-822a-ffba6db47292" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_A2026InducementPlanMember_01a08946-812e-7edc-976f-6294240c217e" xlink:href="nxh-20260930.xsd#nxh_A2026InducementPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_01a08946-224d-75cd-822a-ffba6db47292" xlink:to="loc_nxh_A2026InducementPlanMember_01a08946-812e-7edc-976f-6294240c217e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a11c02-e94a-7dd9-8e2e-2adde576e1d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7934-82bf-d6e5639a7ae1" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a11c02-e94a-7dd9-8e2e-2adde576e1d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_01a0020e-cd1a-741a-a44e-03d6dad50abd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7934-82bf-d6e5639a7ae1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_01a0020e-cd1a-741a-a44e-03d6dad50abd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_01a0020e-cd1a-7c8e-8ec0-445c047d7b8c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7934-82bf-d6e5639a7ae1" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_01a0020e-cd1a-7c8e-8ec0-445c047d7b8c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeBenefitsAndShareBasedCompensation_01a0020e-cd1a-7f71-a8d6-1fad52f96452" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeBenefitsAndShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7934-82bf-d6e5639a7ae1" xlink:to="loc_us-gaap_EmployeeBenefitsAndShareBasedCompensation_01a0020e-cd1a-7f71-a8d6-1fad52f96452" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_01a164a7-c162-700e-998f-ef93756395c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7934-82bf-d6e5639a7ae1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_01a164a7-c162-700e-998f-ef93756395c8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_01a164a9-cdc2-72c9-996f-15588289fa7a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7934-82bf-d6e5639a7ae1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_01a164a9-cdc2-72c9-996f-15588289fa7a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan_01a0020e-cd1a-7663-9fb7-30450db616ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7934-82bf-d6e5639a7ae1" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan_01a0020e-cd1a-7663-9fb7-30450db616ee" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_StockIssuedDuringPeriodEmployeeStockOwnershipPlanAveragePricePerShare_01a0020e-cd1a-7fef-826f-7117c49d356a" xlink:href="nxh-20260930.xsd#nxh_StockIssuedDuringPeriodEmployeeStockOwnershipPlanAveragePricePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7934-82bf-d6e5639a7ae1" xlink:to="loc_nxh_StockIssuedDuringPeriodEmployeeStockOwnershipPlanAveragePricePerShare_01a0020e-cd1a-7fef-826f-7117c49d356a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_01a0020e-cd1a-7869-b163-3dd054cb3541" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7934-82bf-d6e5639a7ae1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_01a0020e-cd1a-7869-b163-3dd054cb3541" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_01a0a867-1bf0-7747-934a-a0eea9774333" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7934-82bf-d6e5639a7ae1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_01a0a867-1bf0-7747-934a-a0eea9774333" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a1525a-2c2b-7674-891e-aa6d5a5b8eec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7934-82bf-d6e5639a7ae1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a1525a-2c2b-7674-891e-aa6d5a5b8eec" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_01a15547-314a-767c-8331-8b88b91ca38e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7934-82bf-d6e5639a7ae1" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_01a15547-314a-767c-8331-8b88b91ca38e" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_01a1525f-99a6-7e58-a47f-c8ed92b8a106" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7934-82bf-d6e5639a7ae1" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_01a1525f-99a6-7e58-a47f-c8ed92b8a106" xlink:type="arc" order="12"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/STOCKBASEDAWARDSScheduleofRestrictedStockandRestrictedStockUnitActivityDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#STOCKBASEDAWARDSScheduleofRestrictedStockandRestrictedStockUnitActivityDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/STOCKBASEDAWARDSScheduleofRestrictedStockandRestrictedStockUnitActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7915-b4b2-e5e91cd03cc4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a0020e-cd1a-7255-93b3-330e86dec718" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7915-b4b2-e5e91cd03cc4" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a0020e-cd1a-7255-93b3-330e86dec718" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_01a0020e-cd1a-7409-861f-a178d00c9b9d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a0020e-cd1a-7255-93b3-330e86dec718" xlink:to="loc_us-gaap_AwardTypeAxis_01a0020e-cd1a-7409-861f-a178d00c9b9d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a0020e-cd1a-7409-861f-a178d00c9b9d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_01a0020e-cd1a-7409-861f-a178d00c9b9d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a0020e-cd1a-7409-861f-a178d00c9b9d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a0020e-cd1a-73ac-b937-cf3f5969b2b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_01a0020e-cd1a-7409-861f-a178d00c9b9d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a0020e-cd1a-73ac-b937-cf3f5969b2b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_RestrictedStockAndPerformanceSharesMember_01a0020e-cd1a-74ea-a0cb-6a4cc9715b8b" xlink:href="nxh-20260930.xsd#nxh_RestrictedStockAndPerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a0020e-cd1a-73ac-b937-cf3f5969b2b9" xlink:to="loc_nxh_RestrictedStockAndPerformanceSharesMember_01a0020e-cd1a-74ea-a0cb-6a4cc9715b8b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_01a1ac0f-f327-7610-8c02-8f45a2e099e2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_nxh_RestrictedStockAndPerformanceSharesMember_01a0020e-cd1a-74ea-a0cb-6a4cc9715b8b" xlink:to="loc_us-gaap_PerformanceSharesMember_01a1ac0f-f327-7610-8c02-8f45a2e099e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardDateAxis_01a1ac3f-d94a-7e21-ab5f-0c1d1e72f6fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a0020e-cd1a-7255-93b3-330e86dec718" xlink:to="loc_us-gaap_AwardDateAxis_01a1ac3f-d94a-7e21-ab5f-0c1d1e72f6fc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardDateDomain_01a1ac3f-d94a-7e21-ab5f-0c1d1e72f6fc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardDateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardDateAxis_01a1ac3f-d94a-7e21-ab5f-0c1d1e72f6fc" xlink:to="loc_us-gaap_AwardDateDomain_01a1ac3f-d94a-7e21-ab5f-0c1d1e72f6fc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardDateDomain_01a1ac3f-d94a-799e-b1f5-b570a1ed17ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardDateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardDateAxis_01a1ac3f-d94a-7e21-ab5f-0c1d1e72f6fc" xlink:to="loc_us-gaap_AwardDateDomain_01a1ac3f-d94a-799e-b1f5-b570a1ed17ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_NoDateEstablishedMember_01a1ac40-0fec-798a-89bc-29a1c1950136" xlink:href="nxh-20260930.xsd#nxh_NoDateEstablishedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AwardDateDomain_01a1ac3f-d94a-799e-b1f5-b570a1ed17ed" xlink:to="loc_nxh_NoDateEstablishedMember_01a1ac40-0fec-798a-89bc-29a1c1950136" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a0020e-cd1a-7579-aa03-a4dc0c65fe24" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7915-b4b2-e5e91cd03cc4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a0020e-cd1a-7579-aa03-a4dc0c65fe24" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a0020e-cd1a-761d-b30a-3db2061b070b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a0020e-cd1a-7579-aa03-a4dc0c65fe24" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a0020e-cd1a-761d-b30a-3db2061b070b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a0020e-cd1a-76f8-b1ca-88f4c64e2cdf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a0020e-cd1a-7579-aa03-a4dc0c65fe24" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a0020e-cd1a-76f8-b1ca-88f4c64e2cdf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_01a0020e-cd1a-7142-8d3b-4815d119fb57" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a0020e-cd1a-7579-aa03-a4dc0c65fe24" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_01a0020e-cd1a-7142-8d3b-4815d119fb57" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_01a0020e-cd1a-785f-a885-fecbdf13d014" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a0020e-cd1a-7579-aa03-a4dc0c65fe24" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_01a0020e-cd1a-785f-a885-fecbdf13d014" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a0020e-cd1a-730c-8c33-a0763ee46498" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_01a0020e-cd1a-7a83-a5a8-944c6f66afc7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a0020e-cd1a-7915-b4b2-e5e91cd03cc4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_01a0020e-cd1a-7a83-a5a8-944c6f66afc7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a0020e-cd1a-7ae5-b63a-4f9360957b3b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_01a0020e-cd1a-7a83-a5a8-944c6f66afc7" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a0020e-cd1a-7ae5-b63a-4f9360957b3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a0020e-cd1a-7c61-bd5e-e3cdd9b12367" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_01a0020e-cd1a-7a83-a5a8-944c6f66afc7" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a0020e-cd1a-7c61-bd5e-e3cdd9b12367" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_01a0020e-cd1a-78ea-a9f2-91906ffe3924" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_01a0020e-cd1a-7a83-a5a8-944c6f66afc7" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_01a0020e-cd1a-78ea-a9f2-91906ffe3924" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_01a0020e-cd1a-7526-844d-103ebb59d374" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_01a0020e-cd1a-7a83-a5a8-944c6f66afc7" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_01a0020e-cd1a-7526-844d-103ebb59d374" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a0020e-cd1a-782e-8b34-cc3f0fbcb21e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/REVENUEANDCONTRACTLIABILITYNarrativeDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#REVENUEANDCONTRACTLIABILITYNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/REVENUEANDCONTRACTLIABILITYNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_01a0020e-cd1a-7758-863f-1d38db0e768e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_01a0020e-cd1a-7b39-9134-99f3539e7914" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a0020e-cd1a-7758-863f-1d38db0e768e" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_01a0020e-cd1a-7b39-9134-99f3539e7914" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ContractWithCustomerLiabilityAxis_01a0020e-cd1a-738d-b93f-9795ad51c8a0" xlink:href="nxh-20260930.xsd#nxh_ContractWithCustomerLiabilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_01a0020e-cd1a-7b39-9134-99f3539e7914" xlink:to="loc_nxh_ContractWithCustomerLiabilityAxis_01a0020e-cd1a-738d-b93f-9795ad51c8a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ContractWithCustomerLiabilityDomain_01a0020e-cd1a-738d-b93f-9795ad51c8a0_default" xlink:href="nxh-20260930.xsd#nxh_ContractWithCustomerLiabilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_nxh_ContractWithCustomerLiabilityAxis_01a0020e-cd1a-738d-b93f-9795ad51c8a0" xlink:to="loc_nxh_ContractWithCustomerLiabilityDomain_01a0020e-cd1a-738d-b93f-9795ad51c8a0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ContractWithCustomerLiabilityDomain_01a0020e-cd1a-72ca-9fed-61e60da4cd2e" xlink:href="nxh-20260930.xsd#nxh_ContractWithCustomerLiabilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_nxh_ContractWithCustomerLiabilityAxis_01a0020e-cd1a-738d-b93f-9795ad51c8a0" xlink:to="loc_nxh_ContractWithCustomerLiabilityDomain_01a0020e-cd1a-72ca-9fed-61e60da4cd2e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ClubORewardPointsMember_01a0020e-cd1a-7578-a384-855d1afccd8f" xlink:href="nxh-20260930.xsd#nxh_ClubORewardPointsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_nxh_ContractWithCustomerLiabilityDomain_01a0020e-cd1a-72ca-9fed-61e60da4cd2e" xlink:to="loc_nxh_ClubORewardPointsMember_01a0020e-cd1a-7578-a384-855d1afccd8f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_01a0020e-cd1a-727f-bb03-e8099c2808eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a0020e-cd1a-7758-863f-1d38db0e768e" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_01a0020e-cd1a-727f-bb03-e8099c2808eb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredRevenueCurrent_01a0020e-cd1a-75d5-af10-d0046d426ff5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredRevenueCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a0020e-cd1a-7758-863f-1d38db0e768e" xlink:to="loc_us-gaap_DeferredRevenueCurrent_01a0020e-cd1a-75d5-af10-d0046d426ff5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_GiftCardAndClubRewardsBreakage_01a0020e-cd1a-7b90-b454-0d2e07bf0a57" xlink:href="nxh-20260930.xsd#nxh_GiftCardAndClubRewardsBreakage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a0020e-cd1a-7758-863f-1d38db0e768e" xlink:to="loc_nxh_GiftCardAndClubRewardsBreakage_01a0020e-cd1a-7b90-b454-0d2e07bf0a57" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/NETLOSSPERSHAREScheduleofAntidilutiveSecuritiesDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#NETLOSSPERSHAREScheduleofAntidilutiveSecuritiesDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/NETLOSSPERSHAREScheduleofAntidilutiveSecuritiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a0020e-cd1a-7dba-a5ae-b05ef373d2f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_01a0020e-cd1a-7f4d-b3e6-cd04db1a673c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a0020e-cd1a-7dba-a5ae-b05ef373d2f3" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_01a0020e-cd1a-7f4d-b3e6-cd04db1a673c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_01a0020e-cd1a-7ad6-bb53-db684bddd9a0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_01a0020e-cd1a-7f4d-b3e6-cd04db1a673c" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_01a0020e-cd1a-7ad6-bb53-db684bddd9a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a0020e-cd1a-7ad6-bb53-db684bddd9a0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_01a0020e-cd1a-7ad6-bb53-db684bddd9a0" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a0020e-cd1a-7ad6-bb53-db684bddd9a0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a0020e-cd1a-73b3-878c-557859fb6725" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_01a0020e-cd1a-7ad6-bb53-db684bddd9a0" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a0020e-cd1a-73b3-878c-557859fb6725" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockCompensationPlanMember_01a1554a-2023-764a-b4fd-10e5cd0bc1e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockCompensationPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a0020e-cd1a-73b3-878c-557859fb6725" xlink:to="loc_us-gaap_StockCompensationPlanMember_01a1554a-2023-764a-b4fd-10e5cd0bc1e8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockMember_01a0020e-cd1a-7041-8649-e65f3d42c9b8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a0020e-cd1a-73b3-878c-557859fb6725" xlink:to="loc_us-gaap_EmployeeStockMember_01a0020e-cd1a-7041-8649-e65f3d42c9b8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_01a0020e-cd1a-7b0e-82f1-25a259e6caa2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WarrantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a0020e-cd1a-73b3-878c-557859fb6725" xlink:to="loc_us-gaap_WarrantMember_01a0020e-cd1a-7b0e-82f1-25a259e6caa2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtSecuritiesMember_01a15549-9890-7a16-8367-4528c42d9f75" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConvertibleDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a0020e-cd1a-73b3-878c-557859fb6725" xlink:to="loc_us-gaap_ConvertibleDebtSecuritiesMember_01a15549-9890-7a16-8367-4528c42d9f75" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_01a0020e-cd1a-72bc-a9d1-db52627865c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a0020e-cd1a-7dba-a5ae-b05ef373d2f3" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_01a0020e-cd1a-72bc-a9d1-db52627865c1" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.neighborhoodintelligence.com/role/SUBSEQUENTEVENTSNarrativeDetails" xlink:type="simple" xlink:href="nxh-20260930.xsd#SUBSEQUENTEVENTSNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.neighborhoodintelligence.com/role/SUBSEQUENTEVENTSNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_01a0020e-cd1a-7142-8147-013e5f73ab55" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_01a0020e-cd1a-7883-86ab-dca01cf1ec18" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a0020e-cd1a-7142-8147-013e5f73ab55" xlink:to="loc_us-gaap_SubsequentEventTable_01a0020e-cd1a-7883-86ab-dca01cf1ec18" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightAxis_01a11e46-0946-7c10-92a4-c61f47d5ec2c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_01a0020e-cd1a-7883-86ab-dca01cf1ec18" xlink:to="loc_us-gaap_ClassOfWarrantOrRightAxis_01a11e46-0946-7c10-92a4-c61f47d5ec2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_01a11e46-0946-7c10-92a4-c61f47d5ec2c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_01a11e46-0946-7c10-92a4-c61f47d5ec2c" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_01a11e46-0946-7c10-92a4-c61f47d5ec2c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_01a11e46-0946-7ba2-afbc-c7efcdcf9e48" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_01a11e46-0946-7c10-92a4-c61f47d5ec2c" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_01a11e46-0946-7ba2-afbc-c7efcdcf9e48" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_PreFundedWarrantsMember_01a17e89-a4b4-78c3-8a16-6373e06f1e29" xlink:href="nxh-20260930.xsd#nxh_PreFundedWarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_01a11e46-0946-7ba2-afbc-c7efcdcf9e48" xlink:to="loc_nxh_PreFundedWarrantsMember_01a17e89-a4b4-78c3-8a16-6373e06f1e29" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_AdditionalWarrantsIssuedOnOctober6Member_01a1a72a-1b33-7cbb-b64a-814279e6c8e4" xlink:href="nxh-20260930.xsd#nxh_AdditionalWarrantsIssuedOnOctober6Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_01a11e46-0946-7ba2-afbc-c7efcdcf9e48" xlink:to="loc_nxh_AdditionalWarrantsIssuedOnOctober6Member_01a1a72a-1b33-7cbb-b64a-814279e6c8e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_01a11ea7-ca3f-79f4-8f7a-99ec695f8bac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_01a0020e-cd1a-7883-86ab-dca01cf1ec18" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_01a11ea7-ca3f-79f4-8f7a-99ec695f8bac" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01a11ea7-ca3f-79f4-8f7a-99ec695f8bac_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_01a11ea7-ca3f-79f4-8f7a-99ec695f8bac" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01a11ea7-ca3f-79f4-8f7a-99ec695f8bac_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01a11ea7-ca3f-7b14-8cf5-7d809ac074ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_01a11ea7-ca3f-79f4-8f7a-99ec695f8bac" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01a11ea7-ca3f-7b14-8cf5-7d809ac074ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_01a11ea8-05eb-70e7-b534-6239c6abd607" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_01a11ea7-ca3f-7b14-8cf5-7d809ac074ba" xlink:to="loc_us-gaap_SubsequentEventMember_01a11ea8-05eb-70e7-b534-6239c6abd607" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_01a164ac-f965-7255-9c59-5f5fb8df57b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_01a0020e-cd1a-7883-86ab-dca01cf1ec18" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_01a164ac-f965-7255-9c59-5f5fb8df57b3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a164ac-f965-7255-9c59-5f5fb8df57b3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_01a164ac-f965-7255-9c59-5f5fb8df57b3" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a164ac-f965-7255-9c59-5f5fb8df57b3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a164ac-f965-7093-a369-9d7da9280368" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_01a164ac-f965-7255-9c59-5f5fb8df57b3" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a164ac-f965-7093-a369-9d7da9280368" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_August2026SalesAgreementMember_01a164ac-f965-7109-8f03-46cb6f519547" xlink:href="nxh-20260930.xsd#nxh_August2026SalesAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a164ac-f965-7093-a369-9d7da9280368" xlink:to="loc_nxh_August2026SalesAgreementMember_01a164ac-f965-7109-8f03-46cb6f519547" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a1a270-5e85-721a-a365-a9d6f033e951" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_01a0020e-cd1a-7883-86ab-dca01cf1ec18" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a1a270-5e85-721a-a365-a9d6f033e951" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a1a270-5e85-721a-a365-a9d6f033e951_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a1a270-5e85-721a-a365-a9d6f033e951" xlink:to="loc_us-gaap_EquityComponentDomain_01a1a270-5e85-721a-a365-a9d6f033e951_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a1a270-5e85-738e-ba63-6619addb0a1c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a1a270-5e85-721a-a365-a9d6f033e951" xlink:to="loc_us-gaap_EquityComponentDomain_01a1a270-5e85-738e-ba63-6619addb0a1c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_01a17e89-73eb-700a-9c2a-532e38952a4c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a1a270-5e85-738e-ba63-6619addb0a1c" xlink:to="loc_us-gaap_CommonStockMember_01a17e89-73eb-700a-9c2a-532e38952a4c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_SaleOfStockStockApprovedForOfferingAggregateAmount_01a16289-f6b5-7b3f-9305-ea533e0d4dc6" xlink:href="nxh-20260930.xsd#nxh_SaleOfStockStockApprovedForOfferingAggregateAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a0020e-cd1a-7142-8147-013e5f73ab55" xlink:to="loc_nxh_SaleOfStockStockApprovedForOfferingAggregateAmount_01a16289-f6b5-7b3f-9305-ea533e0d4dc6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_01a17820-9121-74ba-93dc-51d4b6610d21" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a0020e-cd1a-7142-8147-013e5f73ab55" xlink:to="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_01a17820-9121-74ba-93dc-51d4b6610d21" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_01a17e8a-a7d4-79a2-93d6-279f53b197a8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a0020e-cd1a-7142-8147-013e5f73ab55" xlink:to="loc_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_01a17e8a-a7d4-79a2-93d6-279f53b197a8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_01a17968-5b0e-7593-b8e6-7012e12446c9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a0020e-cd1a-7142-8147-013e5f73ab55" xlink:to="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_01a17968-5b0e-7593-b8e6-7012e12446c9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOrSaleOfEquity_01a164ad-ece8-761e-b43c-68b5b7a5887c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromIssuanceOrSaleOfEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a0020e-cd1a-7142-8147-013e5f73ab55" xlink:to="loc_us-gaap_ProceedsFromIssuanceOrSaleOfEquity_01a164ad-ece8-761e-b43c-68b5b7a5887c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_01a17828-f233-7489-a146-8d7b7ae3de46" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a0020e-cd1a-7142-8147-013e5f73ab55" xlink:to="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_01a17828-f233-7489-a146-8d7b7ae3de46" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_WarrantsAndRightsOutstandingExercisePeriod_01a1796a-bb99-7cfc-920b-a8baf69042d5" xlink:href="nxh-20260930.xsd#nxh_WarrantsAndRightsOutstandingExercisePeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a0020e-cd1a-7142-8147-013e5f73ab55" xlink:to="loc_nxh_WarrantsAndRightsOutstandingExercisePeriod_01a1796a-bb99-7cfc-920b-a8baf69042d5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantsAndRightsOutstandingTerm_01a1782a-3c2c-7cc5-8de7-40e3726f6a14" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WarrantsAndRightsOutstandingTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a0020e-cd1a-7142-8147-013e5f73ab55" xlink:to="loc_us-gaap_WarrantsAndRightsOutstandingTerm_01a1782a-3c2c-7cc5-8de7-40e3726f6a14" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_ClassOfWarrantOrRightExpired_01a17966-bea9-755e-8cb3-1a307adbfdf7" xlink:href="nxh-20260930.xsd#nxh_ClassOfWarrantOrRightExpired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a0020e-cd1a-7142-8147-013e5f73ab55" xlink:to="loc_nxh_ClassOfWarrantOrRightExpired_01a17966-bea9-755e-8cb3-1a307adbfdf7" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_nxh_SaleOfIntangibleAssetsExpectedConsideration_01a164b1-af92-71d2-adb6-e946e6ab3d70" xlink:href="nxh-20260930.xsd#nxh_SaleOfIntangibleAssetsExpectedConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a0020e-cd1a-7142-8147-013e5f73ab55" xlink:to="loc_nxh_SaleOfIntangibleAssetsExpectedConsideration_01a164b1-af92-71d2-adb6-e946e6ab3d70" xlink:type="arc" order="9"/>
  </link:definitionLink>
</link:linkbase>
