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English definition of “quadruple”

quadruple

verb [I or T] uk   /kwɒdˈruː.pl̩/ us    /kwɑːˈdruː-/
to become four times as big, or to multiply a number or amount by four: The number of students at the college has quadrupled in the last ten years. We expect to quadruple our profits this year.Addition, subtraction, multiplication and divisionCalculations and calculating

quadruple

adjective, predeterminer uk   /ˈkwɒd.rʊp.l̩/ us    /kwɑːˈdruː.pl̩/
four times as big: a quadruple measure We have had quadruple the number of applicants we expected.Single, double and multiple involving four parts, people, places, etc.: a quadruple fracture of his thumbSingle, double and multiple
(Definition of quadruple from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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