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



BrE BrE//ˈdesaɪl//
; NAmE NAmE//ˈdesaɪl//
, also NAmE//ˈdesl//
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one of ten equal groups into which a collection of things or people can be divided according to the distribution of a particular variable families in the top decile of income (= the 10% of families with the highest income) Word Originlate 17th cent.: from French décile, from a medieval Latin derivative of Latin decem ‘ten’.
See the Oxford Advanced American Dictionary entry: decile