quintile

[kwin-til, -tahyl]

noun

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

Astrology. a quintile aspect.

adjective

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

Origin of quintile

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

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for quintile

Historical Examples of quintile

Quintile, kwin′til, n. the aspect of planets distant from each other the fifth part of the zodiac, or 72.
Chambers's Twentieth Century Dictionary (part 3 of 4: N-R)
Various

British Dictionary definitions for quintile

quintile

noun astrology

an aspect of 72° between two heavenly bodies

a fifth part of a distribution

Word Origin for quintile

C17: from Latin quintus fifth

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for quintile

1610s, originally in astrology, from Latin quintus "the fifth" (see quinque-) + -ile, from quartile. Use in statistics dates to 1951.