quintile
/ˈkwɪntaɪl/noun
1
- Statistics any of five equal groups into which a population can be divided according to the distribution of values of a particular variable【统计】五分位数。
1.1
- each of the four values of the random variable which divide a population into five such groups（五分位数中的）四个值之一。
2
- mass noun Astrology an aspect of 72° (one fifth of a circle)【占星】（天体的）五分一对座。
词源
early 17th cent.: from Latin quintilis （mensis） 'fifth month， July'， from quintus 'fifth'.