<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd http://xbrl.org/2005/xbrldt http://www.xbrl.org/2005/xbrldt-2005.xsd" xmlns:cik0001493580="http://www.dreyfus.com/20251031">
	<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" />
	<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" />
	<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" />
	<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" />
	<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" />
	<link:arcroleRef arcroleURI="http://www.xbrl.org/2009/arcrole/dep-concept-deprecatedConcept" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/arcrole/deprecated-2009-12-16.xsd#dep-concept-deprecatedConcept" />
	<link:roleRef roleURI="http://www.dreyfus.com/20251031/role/RRRiskTable3" xlink:type="simple" xlink:href="c485bpos-20260622.xsd#RRRiskTable3" />
	<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/SeriesOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#SeriesOnly" />
	<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ClassOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ClassOnly" />
	<link:roleRef roleURI="http://xbrl.sec.gov/rr/role/ShareholderFeesData" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderFeesData" />
	<link:roleRef roleURI="http://xbrl.sec.gov/rr/role/OperatingExpensesData" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#OperatingExpensesData" />
	<link:roleRef roleURI="http://xbrl.sec.gov/rr/role/RiskOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#RiskOnly" />
	<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/2025/dei-2025.xsd#dei_EntityDomain" xlink:label="EntityDomain" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_S000105829Member" xlink:label="S000105829Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="S000105829Member" order="1.0" />
	</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/2025/oef-2025.xsd#oef_ShareClassDomain" xlink:label="ShareClassDomain" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_C000276621Member" xlink:label="C000276621Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000276621Member" order="1.0" />
	</link:definitionLink>
	<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/2025/oef-2025.xsd#oef_AllRisksMember" xlink:label="AllRisksMember" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_PrincipalRisks2Member" xlink:label="PrincipalRisks2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="PrincipalRisks2Member" order="1.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_Risksofstockinvesting2Member" xlink:label="Risksofstockinvesting2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="Risksofstockinvesting2Member" order="2.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_Indexingstrategyrisk2Member" xlink:label="Indexingstrategyrisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="Indexingstrategyrisk2Member" order="3.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_Growthstockrisk2Member" xlink:label="Growthstockrisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="Growthstockrisk2Member" order="4.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_Large-capstockrisk2Member" xlink:label="Large-capstockrisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="Large-capstockrisk2Member" order="5.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_Concentrationrisk2Member" xlink:label="Concentrationrisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="Concentrationrisk2Member" order="6.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_Informationtechnologycompaniesrisk2Member" xlink:label="Informationtechnologycompaniesrisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="Informationtechnologycompaniesrisk2Member" order="7.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_Issuerrisk2Member" xlink:label="Issuerrisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="Issuerrisk2Member" order="8.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_REITrisk2Member" xlink:label="REITrisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="REITrisk2Member" order="9.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_Authorizedparticipantsmarketmakersandliquidityprovidersrisk2Member" xlink:label="Authorizedparticipantsmarketmakersandliquidityprovidersrisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="Authorizedparticipantsmarketmakersandliquidityprovidersrisk2Member" order="10.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_Fluctuationofnetassetvaluesharepremiumsanddiscountsrisk2Member" xlink:label="Fluctuationofnetassetvaluesharepremiumsanddiscountsrisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="Fluctuationofnetassetvaluesharepremiumsanddiscountsrisk2Member" order="11.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_Tradingissuesrisk2Member" xlink:label="Tradingissuesrisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="Tradingissuesrisk2Member" order="12.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_Marketrisk2Member" xlink:label="Marketrisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="Marketrisk2Member" order="13.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_Non-diversificationrisk2Member" xlink:label="Non-diversificationrisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="Non-diversificationrisk2Member" order="14.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260622.xsd#cik0001493580_Newfundrisk2Member" xlink:label="Newfundrisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="Newfundrisk2Member" order="15.0" />
	</link:definitionLink>
</link:linkbase>