[kwin-til, -tahyl]


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


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

British Dictionary definitions for 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.

Online Etymology Dictionary, © 2010 Douglas Harper