Definition of quadratic adjective from the Oxford Advanced Learner's Dictionary



BrE BrE//kwɒˈdrætɪk//
; NAmE NAmE//kwɑːˈdrætɪk//
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involving an unknown quantity that is multiplied by itself once only a quadratic equation Word Originmid 17th cent.: from French quadratique or modern Latin quadraticus, from quadratus ‘made square’, past participle of quadrare, from quattuor ‘four’.
See the Oxford Advanced American Dictionary entry: quadratic