<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 6.5c -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: https://www.novaworks.com -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#HoldingsByIndustrySector" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByIndustrySector" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#HoldingsByGeographicRegion" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByGeographicRegion" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#HoldingsByCreditQuality" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByCreditQuality" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#HoldingsByMaturity" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByMaturity" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#HoldingsByAssetCategory" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByAssetCategory" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#HoldingsByOtherCategory" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByOtherCategory" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#HoldingsByOtherCategory2" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByOtherCategory2" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#LargestHoldings" roleURI="http://xbrl.sec.gov/oef/role/LargestHoldings" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#ProspectusOnly" roleURI="http://xbrl.sec.gov/rr/role/ProspectusOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#RiskOnly" roleURI="http://xbrl.sec.gov/rr/role/RiskOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#CoregistrantOnly" roleURI="http://xbrl.sec.gov/oef/role/CoregistrantOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#SeriesOnly" roleURI="http://xbrl.sec.gov/oef/role/SeriesOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#ClassOnly" roleURI="http://xbrl.sec.gov/oef/role/ClassOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#PerformanceMeasureOnly" roleURI="http://xbrl.sec.gov/rr/role/PerformanceMeasureOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#HoldingAssetCategoryOnly" roleURI="http://xbrl.sec.gov/oef/role/HoldingAssetCategoryOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#BroadBasedIndexOnly" roleURI="http://xbrl.sec.gov/oef/role/BroadBasedIndexOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#AdditionalIndexOnly" roleURI="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#IndustrySectorOnly" roleURI="http://xbrl.sec.gov/oef/role/IndustrySectorOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#GeographicRegionOnly" roleURI="http://xbrl.sec.gov/oef/role/GeographicRegionOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#CreditQualityOnly" roleURI="http://xbrl.sec.gov/oef/role/CreditQualityOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#MaturityOnly" roleURI="http://xbrl.sec.gov/oef/role/MaturityOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#Other1CategoryOnly" roleURI="http://xbrl.sec.gov/oef/role/Other1CategoryOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#Other2CategoryOnly" roleURI="http://xbrl.sec.gov/oef/role/Other2CategoryOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#LargestHoldingOnly" roleURI="http://xbrl.sec.gov/oef/role/LargestHoldingOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#SalesLoadOnly" roleURI="http://xbrl.sec.gov/oef/role/SalesLoadOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#HoldingMeasureOnly" roleURI="http://xbrl.sec.gov/oef/role/HoldingMeasureOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#ValueMeasureOnly" roleURI="http://xbrl.sec.gov/oef/role/ValueMeasureOnly" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#notAll" arcroleURI="http://xbrl.org/int/dim/arcrole/notAll" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/ProspectusOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/RiskOnly">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_AllRisksMember" xlink:label="loc_oefAllRisksMember" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_UnderlyingSecurityRiskMember" xlink:label="loc_defianceUnderlyingSecurityRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceUnderlyingSecurityRiskMember" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_MaterialsSectorRisksMember" xlink:label="loc_defianceMaterialsSectorRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceMaterialsSectorRisksMember" xlink:type="arc" order="10" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_MetalsandMiningIndustryRisksMember" xlink:label="loc_defianceMetalsandMiningIndustryRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceMetalsandMiningIndustryRisksMember" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_EquitySecuritiesRiskMember" xlink:label="loc_defianceEquitySecuritiesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceEquitySecuritiesRiskMember" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_MarketCapitalizationRisksMember" xlink:label="loc_defianceMarketCapitalizationRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceMarketCapitalizationRisksMember" xlink:type="arc" order="40" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_LargeCapitalizationCompaniesRiskMember" xlink:label="loc_defianceLargeCapitalizationCompaniesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceLargeCapitalizationCompaniesRiskMember" xlink:type="arc" order="50" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_MidCapitalizationCompaniesRiskMember" xlink:label="loc_defianceMidCapitalizationCompaniesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceMidCapitalizationCompaniesRiskMember" xlink:type="arc" order="60" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_SmallCapitalizationCompaniesRiskMember" xlink:label="loc_defianceSmallCapitalizationCompaniesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSmallCapitalizationCompaniesRiskMember" xlink:type="arc" order="70" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CommodityExposureRiskMember" xlink:label="loc_defianceCommodityExposureRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCommodityExposureRiskMember" xlink:type="arc" order="80" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CopperRiskMember" xlink:label="loc_defianceCopperRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCopperRiskMember" xlink:type="arc" order="90" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ExposureToRelatedMarketsRiskMember" xlink:label="loc_defianceExposureToRelatedMarketsRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceExposureToRelatedMarketsRiskMember" xlink:type="arc" order="100" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CommodityPriceRelationshipRiskMember" xlink:label="loc_defianceCommodityPriceRelationshipRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCommodityPriceRelationshipRiskMember" xlink:type="arc" order="110" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_FocusRiskMember" xlink:label="loc_defianceFocusRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceFocusRiskMember" xlink:type="arc" order="120" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_InvestableUniverseofCompaniesRiskMember" xlink:label="loc_defianceInvestableUniverseofCompaniesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceInvestableUniverseofCompaniesRiskMember" xlink:type="arc" order="130" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ForeignSecuritiesRisksMember" xlink:label="loc_defianceForeignSecuritiesRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceForeignSecuritiesRisksMember" xlink:type="arc" order="140" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CurrencyRiskMember" xlink:label="loc_defianceCurrencyRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCurrencyRiskMember" xlink:type="arc" order="150" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CustodyRiskMember" xlink:label="loc_defianceCustodyRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCustodyRiskMember" xlink:type="arc" order="160" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_DevelopedandEmergingMarketsRiskMember" xlink:label="loc_defianceDevelopedandEmergingMarketsRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceDevelopedandEmergingMarketsRiskMember" xlink:type="arc" order="170" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_FrontierandStandaloneMarketsRiskMember" xlink:label="loc_defianceFrontierandStandaloneMarketsRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceFrontierandStandaloneMarketsRiskMember" xlink:type="arc" order="180" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_InternationalClosedMarketTradingRiskMember" xlink:label="loc_defianceInternationalClosedMarketTradingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceInternationalClosedMarketTradingRiskMember" xlink:type="arc" order="190" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_GeographicRiskMember" xlink:label="loc_defianceGeographicRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceGeographicRiskMember" xlink:type="arc" order="200" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_RiskofInvestinginChileMember" xlink:label="loc_defianceRiskofInvestinginChileMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceRiskofInvestinginChileMember" xlink:type="arc" order="210" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_RisksofInvestinginChinaMember" xlink:label="loc_defianceRisksofInvestinginChinaMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceRisksofInvestinginChinaMember" xlink:type="arc" order="220" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_EconomicPoliticalandSocialRiskMember" xlink:label="loc_defianceEconomicPoliticalandSocialRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceEconomicPoliticalandSocialRiskMember" xlink:type="arc" order="230" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_RegulatoryRiskMember" xlink:label="loc_defianceRegulatoryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceRegulatoryRiskMember" xlink:type="arc" order="240" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_GovernmentControlandInterventionMember" xlink:label="loc_defianceGovernmentControlandInterventionMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceGovernmentControlandInterventionMember" xlink:type="arc" order="250" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_SecurityConcernsMember" xlink:label="loc_defianceSecurityConcernsMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSecurityConcernsMember" xlink:type="arc" order="260" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_HealthandPandemicRisksMember" xlink:label="loc_defianceHealthandPandemicRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceHealthandPandemicRisksMember" xlink:type="arc" order="270" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_TradeTensionsMember" xlink:label="loc_defianceTradeTensionsMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceTradeTensionsMember" xlink:type="arc" order="280" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_VariableInterestEntityVIEStructureRisksMember" xlink:label="loc_defianceVariableInterestEntityVIEStructureRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceVariableInterestEntityVIEStructureRisksMember" xlink:type="arc" order="290" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_TaxRisksMember" xlink:label="loc_defianceTaxRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceTaxRisksMember" xlink:type="arc" order="300" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_DelistingRisksMember" xlink:label="loc_defianceDelistingRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceDelistingRisksMember" xlink:type="arc" order="310" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CurrencyandEconomicPolicyRisksMember" xlink:label="loc_defianceCurrencyandEconomicPolicyRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCurrencyandEconomicPolicyRisksMember" xlink:type="arc" order="320" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_SecuritiesLendingRiskMember" xlink:label="loc_defianceSecuritiesLendingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSecuritiesLendingRiskMember" xlink:type="arc" order="330" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_SingleIssuerRiskMember" xlink:label="loc_defianceSingleIssuerRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSingleIssuerRiskMember" xlink:type="arc" order="340" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CompoundingAndMarketVolatilityRiskMember" xlink:label="loc_defianceCompoundingAndMarketVolatilityRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCompoundingAndMarketVolatilityRiskMember" xlink:type="arc" order="350" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_DailyCorrelationTrackingRiskMember" xlink:label="loc_defianceDailyCorrelationTrackingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceDailyCorrelationTrackingRiskMember" xlink:type="arc" order="360" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_LeverageRiskMember" xlink:label="loc_defianceLeverageRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceLeverageRiskMember" xlink:type="arc" order="370" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_DerivativesRiskMember" xlink:label="loc_defianceDerivativesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceDerivativesRiskMember" xlink:type="arc" order="380" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_SwapAgreementsMember" xlink:label="loc_defianceSwapAgreementsMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSwapAgreementsMember" xlink:type="arc" order="390" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_OptionsContractsMember" xlink:label="loc_defianceOptionsContractsMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceOptionsContractsMember" xlink:type="arc" order="400" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CounterpartyRiskMember" xlink:label="loc_defianceCounterpartyRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCounterpartyRiskMember" xlink:type="arc" order="410" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IntradayInvestmentRiskMember" xlink:label="loc_defianceIntradayInvestmentRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIntradayInvestmentRiskMember" xlink:type="arc" order="420" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_FixedIncomeSecuritiesRiskMember" xlink:label="loc_defianceFixedIncomeSecuritiesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceFixedIncomeSecuritiesRiskMember" xlink:type="arc" order="430" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_RebalancingRiskMember" xlink:label="loc_defianceRebalancingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceRebalancingRiskMember" xlink:type="arc" order="440" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_EtfRisksMember" xlink:label="loc_defianceEtfRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceEtfRisksMember" xlink:type="arc" order="450" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_AuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember" xlink:label="loc_defianceAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceAuthorizedParticipantsMarketMakersAndLiquidityProvidersConcentrationRiskMember" xlink:type="arc" order="460" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CashRedemptionRiskMember" xlink:label="loc_defianceCashRedemptionRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCashRedemptionRiskMember" xlink:type="arc" order="470" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CostsOfBuyingOrSellingSharesMember" xlink:label="loc_defianceCostsOfBuyingOrSellingSharesMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCostsOfBuyingOrSellingSharesMember" xlink:type="arc" order="480" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_SharesMayTradeAtPricesOtherThanNavMember" xlink:label="loc_defianceSharesMayTradeAtPricesOtherThanNavMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSharesMayTradeAtPricesOtherThanNavMember" xlink:type="arc" order="490" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_TradingMember" xlink:label="loc_defianceTradingMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceTradingMember" xlink:type="arc" order="500" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_LiquidityRisksMember" xlink:label="loc_defianceLiquidityRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceLiquidityRisksMember" xlink:type="arc" order="510" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_HighPortfolioTurnoverRiskMember" xlink:label="loc_defianceHighPortfolioTurnoverRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceHighPortfolioTurnoverRiskMember" xlink:type="arc" order="520" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_TrackingErrorRiskMember" xlink:label="loc_defianceTrackingErrorRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceTrackingErrorRiskMember" xlink:type="arc" order="530" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_LiquidityRiskMember" xlink:label="loc_defianceLiquidityRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceLiquidityRiskMember" xlink:type="arc" order="540" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_EconomicAndMarketRiskMember" xlink:label="loc_defianceEconomicAndMarketRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceEconomicAndMarketRiskMember" xlink:type="arc" order="550" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_MoneyMarketInstrumentRiskMember" xlink:label="loc_defianceMoneyMarketInstrumentRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceMoneyMarketInstrumentRiskMember" xlink:type="arc" order="560" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_NewFundRiskMember" xlink:label="loc_defianceNewFundRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceNewFundRiskMember" xlink:type="arc" order="570" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_TradingHaltRiskMember" xlink:label="loc_defianceTradingHaltRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceTradingHaltRiskMember" xlink:type="arc" order="580" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_OperationalRiskMember" xlink:label="loc_defianceOperationalRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceOperationalRiskMember" xlink:type="arc" order="590" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_USGovernmentAndUSAgencyObligationsRiskMember" xlink:label="loc_defianceUSGovernmentAndUSAgencyObligationsRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceUSGovernmentAndUSAgencyObligationsRiskMember" xlink:type="arc" order="600" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_TaxRiskMember" xlink:label="loc_defianceTaxRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceTaxRiskMember" xlink:type="arc" order="610" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInRiotRiskMember" xlink:label="loc_defianceIndirectInvestmentInRiotRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInRiotRiskMember" xlink:type="arc" order="620" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_RiotTradingRiskMember" xlink:label="loc_defianceRiotTradingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceRiotTradingRiskMember" xlink:type="arc" order="630" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_RIOTPerformanceRiskMember" xlink:label="loc_defianceRIOTPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceRIOTPerformanceRiskMember" xlink:type="arc" order="640" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndustryCompetitionRiskMember" xlink:label="loc_defianceIndustryCompetitionRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndustryCompetitionRiskMember" xlink:type="arc" order="650" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_BitcoinPriceMember" xlink:label="loc_defianceBitcoinPriceMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceBitcoinPriceMember" xlink:type="arc" order="660" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_BitcoinHalvingMember" xlink:label="loc_defianceBitcoinHalvingMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceBitcoinHalvingMember" xlink:type="arc" order="670" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_HashRateAndDifficultyMember" xlink:label="loc_defianceHashRateAndDifficultyMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceHashRateAndDifficultyMember" xlink:type="arc" order="680" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CapitalMarketsIndustryRiskMember" xlink:label="loc_defianceCapitalMarketsIndustryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCapitalMarketsIndustryRiskMember" xlink:type="arc" order="690" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ChinaRiskMember" xlink:label="loc_defianceChinaRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceChinaRiskMember" xlink:type="arc" order="700" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_MarketRiskMember" xlink:label="loc_defianceMarketRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceMarketRiskMember" xlink:type="arc" order="710" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_DerivativesRisksMember" xlink:label="loc_defianceDerivativesRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceDerivativesRisksMember" xlink:type="arc" order="720" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_SwapsMember" xlink:label="loc_defianceSwapsMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSwapsMember" xlink:type="arc" order="730" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ForwardsMember" xlink:label="loc_defianceForwardsMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceForwardsMember" xlink:type="arc" order="740" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ConcentrationRiskMember" xlink:label="loc_defianceConcentrationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceConcentrationRiskMember" xlink:type="arc" order="750" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ConsumerDiscretionarySectorRiskMember" xlink:label="loc_defianceConsumerDiscretionarySectorRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceConsumerDiscretionarySectorRiskMember" xlink:type="arc" order="760" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CommunicationServicesSectorRiskMember" xlink:label="loc_defianceCommunicationServicesSectorRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCommunicationServicesSectorRiskMember" xlink:type="arc" order="770" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_InformationTechnologySectorRiskMember" xlink:label="loc_defianceInformationTechnologySectorRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceInformationTechnologySectorRiskMember" xlink:type="arc" order="780" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ActiveManagementRiskMember" xlink:label="loc_defianceActiveManagementRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceActiveManagementRiskMember" xlink:type="arc" order="790" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CybersecurityRiskMember" xlink:label="loc_defianceCybersecurityRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCybersecurityRiskMember" xlink:type="arc" order="800" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_DepositaryReceiptRiskMember" xlink:label="loc_defianceDepositaryReceiptRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceDepositaryReceiptRiskMember" xlink:type="arc" order="810" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_EmergingMarketsRiskMember" xlink:label="loc_defianceEmergingMarketsRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceEmergingMarketsRiskMember" xlink:type="arc" order="820" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_HongKongRiskMember" xlink:label="loc_defianceHongKongRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceHongKongRiskMember" xlink:type="arc" order="830" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_InflationRiskMember" xlink:label="loc_defianceInflationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceInflationRiskMember" xlink:type="arc" order="840" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IssuerRiskMember" xlink:label="loc_defianceIssuerRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIssuerRiskMember" xlink:type="arc" order="850" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_LiquiditysRisks1Member" xlink:label="loc_defianceLiquiditysRisks1Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceLiquiditysRisks1Member" xlink:type="arc" order="860" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_MoneyMarketFundsRiskMember" xlink:label="loc_defianceMoneyMarketFundsRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceMoneyMarketFundsRiskMember" xlink:type="arc" order="870" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_NewFundRisksMember" xlink:label="loc_defianceNewFundRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceNewFundRisksMember" xlink:type="arc" order="880" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_NonUSSecuritiesRiskMember" xlink:label="loc_defianceNonUSSecuritiesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceNonUSSecuritiesRiskMember" xlink:type="arc" order="890" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_PrivatizationRiskMember" xlink:label="loc_defiancePrivatizationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defiancePrivatizationRiskMember" xlink:type="arc" order="900" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_USGovernmentSecuritiesRiskMember" xlink:label="loc_defianceUSGovernmentSecuritiesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceUSGovernmentSecuritiesRiskMember" xlink:type="arc" order="910" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ValuationRiskMember" xlink:label="loc_defianceValuationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceValuationRiskMember" xlink:type="arc" order="920" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_VariableInterestRiskMember" xlink:label="loc_defianceVariableInterestRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceVariableInterestRiskMember" xlink:type="arc" order="930" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndustryConcentrationRiskMember" xlink:label="loc_defianceIndustryConcentrationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndustryConcentrationRiskMember" xlink:type="arc" order="940" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_SolarIndustryRiskMember" xlink:label="loc_defianceSolarIndustryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSolarIndustryRiskMember" xlink:type="arc" order="950" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_SemiconductorsIndustryRiskMember" xlink:label="loc_defianceSemiconductorsIndustryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSemiconductorsIndustryRiskMember" xlink:type="arc" order="960" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_EsgInvestingStrategyRiskMember" xlink:label="loc_defianceEsgInvestingStrategyRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceEsgInvestingStrategyRiskMember" xlink:type="arc" order="970" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_GeographicConcentrationRisksMember" xlink:label="loc_defianceGeographicConcentrationRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceGeographicConcentrationRisksMember" xlink:type="arc" order="980" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ForeignSecuritiesRiskMember" xlink:label="loc_defianceForeignSecuritiesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceForeignSecuritiesRiskMember" xlink:type="arc" order="990" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_EmergingMarketsSecuritiesRiskMember" xlink:label="loc_defianceEmergingMarketsSecuritiesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceEmergingMarketsSecuritiesRiskMember" xlink:type="arc" order="1000" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ADRandGDRRiskMember" xlink:label="loc_defianceADRandGDRRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceADRandGDRRiskMember" xlink:type="arc" order="1010" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_SmallandMidCapitalizationCompanyRiskMember" xlink:label="loc_defianceSmallandMidCapitalizationCompanyRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSmallandMidCapitalizationCompanyRiskMember" xlink:type="arc" order="1020" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_MicroCapitalizationRiskMember" xlink:label="loc_defianceMicroCapitalizationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceMicroCapitalizationRiskMember" xlink:type="arc" order="1030" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_AmdPriceAppreciationRiskMember" xlink:label="loc_defianceAmdPriceAppreciationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceAmdPriceAppreciationRiskMember" xlink:type="arc" order="1040" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInAmdRiskMember" xlink:label="loc_defianceIndirectInvestmentInAmdRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInAmdRiskMember" xlink:type="arc" order="1050" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_AMDGoodPerformanceRiskMember" xlink:label="loc_defianceAMDGoodPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceAMDGoodPerformanceRiskMember" xlink:type="arc" order="1060" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndustryRecognitionandAnalystCoverageRiskMember" xlink:label="loc_defianceIndustryRecognitionandAnalystCoverageRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndustryRecognitionandAnalystCoverageRiskMember" xlink:type="arc" order="1070" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ShortSaleExposureRiskMember" xlink:label="loc_defianceShortSaleExposureRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceShortSaleExposureRiskMember" xlink:type="arc" order="1080" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_NewerFundRiskMember" xlink:label="loc_defianceNewerFundRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceNewerFundRiskMember" xlink:type="arc" order="1090" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_APPPriceAppreciationRiskMember" xlink:label="loc_defianceAPPPriceAppreciationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceAPPPriceAppreciationRiskMember" xlink:type="arc" order="1100" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInAppRiskMember" xlink:label="loc_defianceIndirectInvestmentInAppRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInAppRiskMember" xlink:type="arc" order="1110" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_APPGoodPerformanceRiskMember" xlink:label="loc_defianceAPPGoodPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceAPPGoodPerformanceRiskMember" xlink:type="arc" order="1120" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ASTSPriceAppreciationRiskMember" xlink:label="loc_defianceASTSPriceAppreciationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceASTSPriceAppreciationRiskMember" xlink:type="arc" order="1130" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInAstsRiskMember" xlink:label="loc_defianceIndirectInvestmentInAstsRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInAstsRiskMember" xlink:type="arc" order="1140" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ASTSGoodPerformanceRiskMember" xlink:label="loc_defianceASTSGoodPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceASTSGoodPerformanceRiskMember" xlink:type="arc" order="1150" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_AVGOPriceAppreciationRiskMember" xlink:label="loc_defianceAVGOPriceAppreciationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceAVGOPriceAppreciationRiskMember" xlink:type="arc" order="1160" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInAvgoRiskMember" xlink:label="loc_defianceIndirectInvestmentInAvgoRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInAvgoRiskMember" xlink:type="arc" order="1170" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_AVGOGoodPerformanceRiskMember" xlink:label="loc_defianceAVGOGoodPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceAVGOGoodPerformanceRiskMember" xlink:type="arc" order="1180" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_BBAIPriceAppreciationRiskMember" xlink:label="loc_defianceBBAIPriceAppreciationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceBBAIPriceAppreciationRiskMember" xlink:type="arc" order="1190" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInBbaiRiskMember" xlink:label="loc_defianceIndirectInvestmentInBbaiRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInBbaiRiskMember" xlink:type="arc" order="1200" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_BBAIGoodPerformanceRiskMember" xlink:label="loc_defianceBBAIGoodPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceBBAIGoodPerformanceRiskMember" xlink:type="arc" order="1210" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_BMNRPriceAppreciationRiskMember" xlink:label="loc_defianceBMNRPriceAppreciationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceBMNRPriceAppreciationRiskMember" xlink:type="arc" order="1220" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInBmnrRiskMember" xlink:label="loc_defianceIndirectInvestmentInBmnrRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInBmnrRiskMember" xlink:type="arc" order="1230" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_BMNRGoodPerformanceRiskMember" xlink:label="loc_defianceBMNRGoodPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceBMNRGoodPerformanceRiskMember" xlink:type="arc" order="1240" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_LiquiditysRisksMember" xlink:label="loc_defianceLiquiditysRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceLiquiditysRisksMember" xlink:type="arc" order="1250" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CRCLPriceAppreciationRiskMember" xlink:label="loc_defianceCRCLPriceAppreciationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCRCLPriceAppreciationRiskMember" xlink:type="arc" order="1260" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInCrclRiskMember" xlink:label="loc_defianceIndirectInvestmentInCrclRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInCrclRiskMember" xlink:type="arc" order="1270" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CRCLGoodPerformanceRiskMember" xlink:label="loc_defianceCRCLGoodPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCRCLGoodPerformanceRiskMember" xlink:type="arc" order="1280" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_HIMSPriceAppreciationRiskMember" xlink:label="loc_defianceHIMSPriceAppreciationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceHIMSPriceAppreciationRiskMember" xlink:type="arc" order="1290" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInHimsRiskMember" xlink:label="loc_defianceIndirectInvestmentInHimsRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInHimsRiskMember" xlink:type="arc" order="1300" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_HIMSGoodPerformanceRiskMember" xlink:label="loc_defianceHIMSGoodPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceHIMSGoodPerformanceRiskMember" xlink:type="arc" order="1310" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_INTCPriceAppreciationRiskMember" xlink:label="loc_defianceINTCPriceAppreciationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceINTCPriceAppreciationRiskMember" xlink:type="arc" order="1320" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInIntcRiskMember" xlink:label="loc_defianceIndirectInvestmentInIntcRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInIntcRiskMember" xlink:type="arc" order="1330" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_INTCGoodPerformanceRiskMember" xlink:label="loc_defianceINTCGoodPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceINTCGoodPerformanceRiskMember" xlink:type="arc" order="1340" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_MRVLPriceAppreciationRiskMember" xlink:label="loc_defianceMRVLPriceAppreciationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceMRVLPriceAppreciationRiskMember" xlink:type="arc" order="1350" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInMrvlRiskMember" xlink:label="loc_defianceIndirectInvestmentInMrvlRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInMrvlRiskMember" xlink:type="arc" order="1360" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_MRVLGoodPerformanceRiskMember" xlink:label="loc_defianceMRVLGoodPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceMRVLGoodPerformanceRiskMember" xlink:type="arc" order="1370" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_MUPriceAppreciationRiskMember" xlink:label="loc_defianceMUPriceAppreciationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceMUPriceAppreciationRiskMember" xlink:type="arc" order="1380" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInMuRiskMember" xlink:label="loc_defianceIndirectInvestmentInMuRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInMuRiskMember" xlink:type="arc" order="1390" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_MUGoodPerformanceRiskMember" xlink:label="loc_defianceMUGoodPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceMUGoodPerformanceRiskMember" xlink:type="arc" order="1400" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_NVOPriceAppreciationRiskMember" xlink:label="loc_defianceNVOPriceAppreciationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceNVOPriceAppreciationRiskMember" xlink:type="arc" order="1410" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInNvoRiskMember" xlink:label="loc_defianceIndirectInvestmentInNvoRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInNvoRiskMember" xlink:type="arc" order="1420" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_NVOGoodPerformanceRiskMember" xlink:label="loc_defianceNVOGoodPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceNVOGoodPerformanceRiskMember" xlink:type="arc" order="1430" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_OSCRPriceAppreciationRiskMember" xlink:label="loc_defianceOSCRPriceAppreciationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceOSCRPriceAppreciationRiskMember" xlink:type="arc" order="1440" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInOscrRiskMember" xlink:label="loc_defianceIndirectInvestmentInOscrRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInOscrRiskMember" xlink:type="arc" order="1450" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_OscrGoodPerformanceRiskMember" xlink:label="loc_defianceOscrGoodPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceOscrGoodPerformanceRiskMember" xlink:type="arc" order="1460" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_SBETPriceAppreciationRiskMember" xlink:label="loc_defianceSBETPriceAppreciationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSBETPriceAppreciationRiskMember" xlink:type="arc" order="1470" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInSbetRiskMember" xlink:label="loc_defianceIndirectInvestmentInSbetRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInSbetRiskMember" xlink:type="arc" order="1480" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_SbetGoodPerformanceRiskMember" xlink:label="loc_defianceSbetGoodPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSbetGoodPerformanceRiskMember" xlink:type="arc" order="1490" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_EthereumPerformanceRiskMember" xlink:label="loc_defianceEthereumPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceEthereumPerformanceRiskMember" xlink:type="arc" order="1500" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_TSMPriceAppreciationRiskMember" xlink:label="loc_defianceTSMPriceAppreciationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceTSMPriceAppreciationRiskMember" xlink:type="arc" order="1510" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInTsmRiskMember" xlink:label="loc_defianceIndirectInvestmentInTsmRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInTsmRiskMember" xlink:type="arc" order="1520" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_TSMGoodPerformanceRiskMember" xlink:label="loc_defianceTSMGoodPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceTSMGoodPerformanceRiskMember" xlink:type="arc" order="1530" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_UNHPriceAppreciationRiskMember" xlink:label="loc_defianceUNHPriceAppreciationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceUNHPriceAppreciationRiskMember" xlink:type="arc" order="1540" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInUnhRiskMember" xlink:label="loc_defianceIndirectInvestmentInUnhRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInUnhRiskMember" xlink:type="arc" order="1550" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_UnhGoodPerformanceRiskMember" xlink:label="loc_defianceUnhGoodPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceUnhGoodPerformanceRiskMember" xlink:type="arc" order="1560" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_KeelRisksMember" xlink:label="loc_defianceKeelRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceKeelRisksMember" xlink:type="arc" order="1570" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInKeelRiskMember" xlink:label="loc_defianceIndirectInvestmentInKeelRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInKeelRiskMember" xlink:type="arc" order="1580" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_KeelTradingRiskMember" xlink:label="loc_defianceKeelTradingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceKeelTradingRiskMember" xlink:type="arc" order="1590" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_KeelPerformanceRiskMember" xlink:label="loc_defianceKeelPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceKeelPerformanceRiskMember" xlink:type="arc" order="1600" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_KeelBusinessRiskMember" xlink:label="loc_defianceKeelBusinessRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceKeelBusinessRiskMember" xlink:type="arc" order="1610" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_BitcoinMiningRiskMember" xlink:label="loc_defianceBitcoinMiningRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceBitcoinMiningRiskMember" xlink:type="arc" order="1620" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_BitcoinSupplyRiskMember" xlink:label="loc_defianceBitcoinSupplyRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceBitcoinSupplyRiskMember" xlink:type="arc" order="1630" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_MinerCollusionRiskMember" xlink:label="loc_defianceMinerCollusionRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceMinerCollusionRiskMember" xlink:type="arc" order="1640" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_EnergySupplyAndEnvironmentalImpactRiskMember" xlink:label="loc_defianceEnergySupplyAndEnvironmentalImpactRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceEnergySupplyAndEnvironmentalImpactRiskMember" xlink:type="arc" order="1650" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_GovernmentRegulatoryRiskMember" xlink:label="loc_defianceGovernmentRegulatoryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceGovernmentRegulatoryRiskMember" xlink:type="arc" order="1660" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_LimitedOperatingHistoryRiskMember" xlink:label="loc_defianceLimitedOperatingHistoryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceLimitedOperatingHistoryRiskMember" xlink:type="arc" order="1670" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_BitcoinBlockchainAndOtherDigitalAssetsRiskMember" xlink:label="loc_defianceBitcoinBlockchainAndOtherDigitalAssetsRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceBitcoinBlockchainAndOtherDigitalAssetsRiskMember" xlink:type="arc" order="1680" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_SoftwareIndustryRiskMember" xlink:label="loc_defianceSoftwareIndustryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSoftwareIndustryRiskMember" xlink:type="arc" order="1690" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ClsRisksMember" xlink:label="loc_defianceClsRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceClsRisksMember" xlink:type="arc" order="1700" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInClsRiskMember" xlink:label="loc_defianceIndirectInvestmentInClsRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInClsRiskMember" xlink:type="arc" order="1710" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ClsTradingRiskMember" xlink:label="loc_defianceClsTradingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceClsTradingRiskMember" xlink:type="arc" order="1720" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ClsPerformanceRiskMember" xlink:label="loc_defianceClsPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceClsPerformanceRiskMember" xlink:type="arc" order="1730" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ClsBusinessRiskMember" xlink:label="loc_defianceClsBusinessRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceClsBusinessRiskMember" xlink:type="arc" order="1740" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ElectronicEquipmentInstrumentsAndComponentsIndustryRiskMember" xlink:label="loc_defianceElectronicEquipmentInstrumentsAndComponentsIndustryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceElectronicEquipmentInstrumentsAndComponentsIndustryRiskMember" xlink:type="arc" order="1750" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ArtificialIntelligenceAndDataCenterInfrastructureRiskMember" xlink:label="loc_defianceArtificialIntelligenceAndDataCenterInfrastructureRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceArtificialIntelligenceAndDataCenterInfrastructureRiskMember" xlink:type="arc" order="1760" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_RegulatoryAndComplianceRiskMember" xlink:label="loc_defianceRegulatoryAndComplianceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceRegulatoryAndComplianceRiskMember" xlink:type="arc" order="1770" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_HpqRisksMember" xlink:label="loc_defianceHpqRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceHpqRisksMember" xlink:type="arc" order="1780" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInHpqRiskMember" xlink:label="loc_defianceIndirectInvestmentInHpqRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInHpqRiskMember" xlink:type="arc" order="1790" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_HpqTradingRiskMember" xlink:label="loc_defianceHpqTradingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceHpqTradingRiskMember" xlink:type="arc" order="1800" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_HpqPerformanceRiskMember" xlink:label="loc_defianceHpqPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceHpqPerformanceRiskMember" xlink:type="arc" order="1810" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_HpqBusinessRiskMember" xlink:label="loc_defianceHpqBusinessRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceHpqBusinessRiskMember" xlink:type="arc" order="1820" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_TechnologyHardwareStorageAndPeripheralsIndustryRiskMember" xlink:label="loc_defianceTechnologyHardwareStorageAndPeripheralsIndustryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceTechnologyHardwareStorageAndPeripheralsIndustryRiskMember" xlink:type="arc" order="1830" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_JmiaRisksMember" xlink:label="loc_defianceJmiaRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceJmiaRisksMember" xlink:type="arc" order="1840" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInJmiaRiskMember" xlink:label="loc_defianceIndirectInvestmentInJmiaRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInJmiaRiskMember" xlink:type="arc" order="1850" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_JmiaTradingRiskMember" xlink:label="loc_defianceJmiaTradingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceJmiaTradingRiskMember" xlink:type="arc" order="1860" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_JmiaPerformanceRiskMember" xlink:label="loc_defianceJmiaPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceJmiaPerformanceRiskMember" xlink:type="arc" order="1870" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_JMIABusinessRisksMember" xlink:label="loc_defianceJMIABusinessRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceJMIABusinessRisksMember" xlink:type="arc" order="1880" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_BroadlineRetailIndustryRiskMember" xlink:label="loc_defianceBroadlineRetailIndustryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceBroadlineRetailIndustryRiskMember" xlink:type="arc" order="1890" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_ForeignPrivateIssuerRiskMember" xlink:label="loc_defianceForeignPrivateIssuerRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceForeignPrivateIssuerRiskMember" xlink:type="arc" order="1900" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_LunrRisksMember" xlink:label="loc_defianceLunrRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceLunrRisksMember" xlink:type="arc" order="1910" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInLunrRiskMember" xlink:label="loc_defianceIndirectInvestmentInLunrRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInLunrRiskMember" xlink:type="arc" order="1920" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_LunrTradingRiskMember" xlink:label="loc_defianceLunrTradingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceLunrTradingRiskMember" xlink:type="arc" order="1930" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_LunrPerformanceRiskMember" xlink:label="loc_defianceLunrPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceLunrPerformanceRiskMember" xlink:type="arc" order="1940" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_LunrBusinessRiskMember" xlink:label="loc_defianceLunrBusinessRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceLunrBusinessRiskMember" xlink:type="arc" order="1950" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_AerospaceAndDefenseIndustryRiskMember" xlink:label="loc_defianceAerospaceAndDefenseIndustryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceAerospaceAndDefenseIndustryRiskMember" xlink:type="arc" order="1960" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_OndsRisksMember" xlink:label="loc_defianceOndsRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceOndsRisksMember" xlink:type="arc" order="1970" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInOndsRiskMember" xlink:label="loc_defianceIndirectInvestmentInOndsRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInOndsRiskMember" xlink:type="arc" order="1980" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_OndsTradingRiskMember" xlink:label="loc_defianceOndsTradingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceOndsTradingRiskMember" xlink:type="arc" order="1990" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_OndsPerformanceRiskMember" xlink:label="loc_defianceOndsPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceOndsPerformanceRiskMember" xlink:type="arc" order="2000" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_OndsBusinessAndRegulatoryRisksMember" xlink:label="loc_defianceOndsBusinessAndRegulatoryRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceOndsBusinessAndRegulatoryRisksMember" xlink:type="arc" order="2010" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CommunicationsEquipmentIndustryRisksMember" xlink:label="loc_defianceCommunicationsEquipmentIndustryRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCommunicationsEquipmentIndustryRisksMember" xlink:type="arc" order="2020" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_PgyRisksMember" xlink:label="loc_defiancePgyRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defiancePgyRisksMember" xlink:type="arc" order="2030" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInPgyRiskMember" xlink:label="loc_defianceIndirectInvestmentInPgyRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInPgyRiskMember" xlink:type="arc" order="2040" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_PgyTradingRiskMember" xlink:label="loc_defiancePgyTradingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defiancePgyTradingRiskMember" xlink:type="arc" order="2050" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_PgyPerformanceRiskMember" xlink:label="loc_defiancePgyPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defiancePgyPerformanceRiskMember" xlink:type="arc" order="2060" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_PgyBusinessRiskMember" xlink:label="loc_defiancePgyBusinessRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defiancePgyBusinessRiskMember" xlink:type="arc" order="2070" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_FintechRiskMember" xlink:label="loc_defianceFintechRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceFintechRiskMember" xlink:type="arc" order="2080" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_FinancialServicesIndustryRiskMember" xlink:label="loc_defianceFinancialServicesIndustryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceFinancialServicesIndustryRiskMember" xlink:type="arc" order="2090" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_PlRisksMember" xlink:label="loc_defiancePlRisksMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defiancePlRisksMember" xlink:type="arc" order="2100" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_IndirectInvestmentInPlRiskMember" xlink:label="loc_defianceIndirectInvestmentInPlRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceIndirectInvestmentInPlRiskMember" xlink:type="arc" order="2110" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_PlTradingRiskMember" xlink:label="loc_defiancePlTradingRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defiancePlTradingRiskMember" xlink:type="arc" order="2120" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_PlPerformanceRiskMember" xlink:label="loc_defiancePlPerformanceRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defiancePlPerformanceRiskMember" xlink:type="arc" order="2130" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_PlBusinessRiskMember" xlink:label="loc_defiancePlBusinessRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defiancePlBusinessRiskMember" xlink:type="arc" order="2140" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_PublicBenefitCorporationRiskMember" xlink:label="loc_defiancePublicBenefitCorporationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defiancePublicBenefitCorporationRiskMember" xlink:type="arc" order="2150" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_SatelliteCompaniesRiskMember" xlink:label="loc_defianceSatelliteCompaniesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceSatelliteCompaniesRiskMember" xlink:type="arc" order="2160" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_CommercialprofessionalServicesIndustryRiskMember" xlink:label="loc_defianceCommercialprofessionalServicesIndustryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefAllRisksMember" xlink:to="loc_defianceCommercialprofessionalServicesIndustryRiskMember" xlink:type="arc" order="2170" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/CoregistrantOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/SeriesOnly">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="loc_deiEntityDomain" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000085119Member" xlink:label="loc_defianceS000085119Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000085119Member" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000085120Member" xlink:label="loc_defianceS000085120Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000085120Member" xlink:type="arc" order="10" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000085121Member" xlink:label="loc_defianceS000085121Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000085121Member" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000085122Member" xlink:label="loc_defianceS000085122Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000085122Member" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000096879Member" xlink:label="loc_defianceS000096879Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000096879Member" xlink:type="arc" order="40" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000096889Member" xlink:label="loc_defianceS000096889Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000096889Member" xlink:type="arc" order="50" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000096890Member" xlink:label="loc_defianceS000096890Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000096890Member" xlink:type="arc" order="60" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000096891Member" xlink:label="loc_defianceS000096891Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000096891Member" xlink:type="arc" order="70" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000096892Member" xlink:label="loc_defianceS000096892Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000096892Member" xlink:type="arc" order="80" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000096893Member" xlink:label="loc_defianceS000096893Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000096893Member" xlink:type="arc" order="90" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000096894Member" xlink:label="loc_defianceS000096894Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000096894Member" xlink:type="arc" order="100" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000096895Member" xlink:label="loc_defianceS000096895Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000096895Member" xlink:type="arc" order="110" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000096880Member" xlink:label="loc_defianceS000096880Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000096880Member" xlink:type="arc" order="120" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000096881Member" xlink:label="loc_defianceS000096881Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000096881Member" xlink:type="arc" order="130" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000096882Member" xlink:label="loc_defianceS000096882Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000096882Member" xlink:type="arc" order="140" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000096883Member" xlink:label="loc_defianceS000096883Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000096883Member" xlink:type="arc" order="150" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000096885Member" xlink:label="loc_defianceS000096885Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000096885Member" xlink:type="arc" order="160" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000096886Member" xlink:label="loc_defianceS000096886Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000096886Member" xlink:type="arc" order="170" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000096887Member" xlink:label="loc_defianceS000096887Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000096887Member" xlink:type="arc" order="180" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000096888Member" xlink:label="loc_defianceS000096888Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000096888Member" xlink:type="arc" order="190" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000099441Member" xlink:label="loc_defianceS000099441Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000099441Member" xlink:type="arc" order="200" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000099442Member" xlink:label="loc_defianceS000099442Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000099442Member" xlink:type="arc" order="210" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000099443Member" xlink:label="loc_defianceS000099443Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000099443Member" xlink:type="arc" order="220" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000099444Member" xlink:label="loc_defianceS000099444Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000099444Member" xlink:type="arc" order="230" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000099445Member" xlink:label="loc_defianceS000099445Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000099445Member" xlink:type="arc" order="240" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000099446Member" xlink:label="loc_defianceS000099446Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000099446Member" xlink:type="arc" order="250" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000099447Member" xlink:label="loc_defianceS000099447Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000099447Member" xlink:type="arc" order="260" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_S000099448Member" xlink:label="loc_defianceS000099448Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_deiEntityDomain" xlink:to="loc_defianceS000099448Member" xlink:type="arc" order="270" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ClassOnly">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_ShareClassDomain" xlink:label="loc_oefShareClassDomain" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000249984Member" xlink:label="loc_defianceC000249984Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000249984Member" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000249985Member" xlink:label="loc_defianceC000249985Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000249985Member" xlink:type="arc" order="10" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000249986Member" xlink:label="loc_defianceC000249986Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000249986Member" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000249987Member" xlink:label="loc_defianceC000249987Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000249987Member" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000265871Member" xlink:label="loc_defianceC000265871Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000265871Member" xlink:type="arc" order="40" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000265881Member" xlink:label="loc_defianceC000265881Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000265881Member" xlink:type="arc" order="50" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000265882Member" xlink:label="loc_defianceC000265882Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000265882Member" xlink:type="arc" order="60" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000265883Member" xlink:label="loc_defianceC000265883Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000265883Member" xlink:type="arc" order="70" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000265884Member" xlink:label="loc_defianceC000265884Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000265884Member" xlink:type="arc" order="80" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000265885Member" xlink:label="loc_defianceC000265885Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000265885Member" xlink:type="arc" order="90" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000265886Member" xlink:label="loc_defianceC000265886Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000265886Member" xlink:type="arc" order="100" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000265887Member" xlink:label="loc_defianceC000265887Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000265887Member" xlink:type="arc" order="110" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000265872Member" xlink:label="loc_defianceC000265872Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000265872Member" xlink:type="arc" order="120" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000265873Member" xlink:label="loc_defianceC000265873Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000265873Member" xlink:type="arc" order="130" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000265874Member" xlink:label="loc_defianceC000265874Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000265874Member" xlink:type="arc" order="140" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000265875Member" xlink:label="loc_defianceC000265875Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000265875Member" xlink:type="arc" order="150" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000265877Member" xlink:label="loc_defianceC000265877Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000265877Member" xlink:type="arc" order="160" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000265878Member" xlink:label="loc_defianceC000265878Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000265878Member" xlink:type="arc" order="170" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000265879Member" xlink:label="loc_defianceC000265879Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000265879Member" xlink:type="arc" order="180" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000265880Member" xlink:label="loc_defianceC000265880Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000265880Member" xlink:type="arc" order="190" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000269217Member" xlink:label="loc_defianceC000269217Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000269217Member" xlink:type="arc" order="200" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000269218Member" xlink:label="loc_defianceC000269218Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000269218Member" xlink:type="arc" order="210" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000269219Member" xlink:label="loc_defianceC000269219Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000269219Member" xlink:type="arc" order="220" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000269220Member" xlink:label="loc_defianceC000269220Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000269220Member" xlink:type="arc" order="230" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000269221Member" xlink:label="loc_defianceC000269221Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000269221Member" xlink:type="arc" order="240" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000269222Member" xlink:label="loc_defianceC000269222Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000269222Member" xlink:type="arc" order="250" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000269223Member" xlink:label="loc_defianceC000269223Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000269223Member" xlink:type="arc" order="260" />
      <link:loc xlink:type="locator" xlink:href="defiance-20260825.xsd#defiance_C000269224Member" xlink:label="loc_defianceC000269224Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_defianceC000269224Member" xlink:type="arc" order="270" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/PerformanceMeasureOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/HoldingAssetCategoryOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/BroadBasedIndexOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/IndustrySectorOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/GeographicRegionOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/CreditQualityOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/MaturityOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/Other1CategoryOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/Other2CategoryOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/LargestHoldingOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/SalesLoadOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/HoldingMeasureOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ValueMeasureOnly" />
</link:linkbase>
