quintile

American  

[kwin-til, -tahyl] / ˈkwɪn tɪl, -taɪl /

noun

1. Statistics. a quantile for the special case of five equal proportions.

2. Astrology. a quintile aspect.

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adjective

1. Astrology. of or relating to the aspect of two heavenly bodies that are one fifth of the zodiac, or 72°, apart.

quintile British  

/ ˈkwɪntaɪl /

noun

1. an aspect of 72° between two heavenly bodies

2. a fifth part of a distribution

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Etymology

Origin of quintile

1600–10; < Latin quīnt ( us ) fifth + -ile (as in quartile )

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Example Sentences

See Examples For:

quintile

For the second quintile, reliance on Social Security drops to 64%, with income from pensions and retirement savings taking up some of the burden and some earnings kicking in as well.

From MarketWatch ● Sep. 2, 2026

Here’s the result of a BofA screen showing companies with five-year projected earnings-per-share growth in the top quintile of the S&P 500 that the firm has rated buy:

From MarketWatch ● Aug. 25, 2026

The highest quintile earns more than that amount.

From The Wall Street Journal ● Jun. 26, 2026

Those in the least-affluent quintile earn up to $34,500 per household annually.

From The Wall Street Journal ● Jun. 26, 2026

The tendency is clear for those in a given high school quintile to be found in or near the same quintile in their university work.

From Vocational Psychology: Its Problems and Methods by Harry L. Hollingworth

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