per•cen•tile
Pronunciation: (pur-sen'tīl, -til), [key]
— Statistics. Statistics.
—n.
- 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.
—adj.
- of or pertaining to a percentile or a division of a distribution by percentiles.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.