Definition of "quadruples" []

• Third-person singular simple present indicative form of quadruple. (verb)

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• "But you may be very sorry when the price of your Amtrak ticket quadruples after public subsidies are taken away."
• "Immigrating from the Third World roughly quadruples the carbon footprint of the average immigrant and his descendants."
• "You'll know it's ready when the marshmallow quadruples in size and starts to brown--just like over a campfire, but without the smoky flavor, alas."