Definition of decimal noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈdesɪml//
; NAmE NAmE//ˈdesɪml//
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(also decimal fraction) a fraction (= a number less than one) that is shown as a dot or point followed by the number of tenths, hundredths, etc. The decimal 0.61 stands for 61 hundredths. compare vulgar fraction Word Originearly 17th cent.: from modern Latin decimalis (adjective), from Latin decimus ‘tenth’.
See the Oxford Advanced American Dictionary entry: decimal