percentile

【医】 百分率的
【经】 百分之一, 按百等分排列的

per.cen.tile

n.（名词）
One of a set of points on a scale arrived at by dividing a group into parts in order of magnitude. For example, a score higher than 97 percent of those attained on an examination is said to be in the 97th percentile.
百分位数：按数量顺序把一组分成部分，其中某个范畴的一组数。例如在考试中比百分之九十七的人都高的分数被称做在第九七区间内