per·cen·tile

[per-sen-tahyl, -til] Statistics.
noun
1.
one of the values of a variable that divides the distribution of the variable into 100 groups having equal frequencies: Ninety percent of the values lie at or below the ninetieth percentile, ten percent above it.
adjective
2.
of or pertaining to a percentile or a division of a distribution by percentiles.

Origin:
1880–85; percent + -ile

percent, percentage, percentile (see usage note at percent).
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
percentile (pəˈsɛntaɪl) [Click for IPA pronunciation guide]
 
n
Also called: centile one of 99 actual or notional values of a variable dividing its distribution into 100 groups with equal frequencies; the 90th percentile is the value of a variable such that 90% of the relevant population is below that value

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Percentile is always a great word to know.
So is interrobang. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a fool or simpleton; ninny.
American Heritage
Science Dictionary
percentile   (pər-sěn'tīl')  Pronunciation Key 
Any of the 100 equal parts into which the range of the values of a set of data can be divided in order to show the distribution of those values. The percentile of a given value is determined by the percentage of the values that are smaller than that value. For example, a test score that is higher than 95 percent of the other scores is in the 95th percentile.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
District percentile rankings varied by demographic groups.
Now consider the top percentile that makes an outsized share of their income through the capital gains tax.
But, the scores shift from round to round, so focus on the percentile.
People in the top fifth percentile of drinkers had the highest odds for anxiety.
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