American English

Definition of percentile noun from the Oxford Advanced American Dictionary

 

percentile

 noun
noun
NAmE//pərˈsɛntaɪl//
 
(technology)
 
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one of the 100 equal groups that a larger group of people can be divided into, according to their place on a scale measuring a particular value Overall these students rank in the 21st percentile on the tests—that is, they did worse than 79 percent of all children taking the test.
See the Oxford Advanced Learner's Dictionary entry: percentile