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[kwin-til, -tahyl] /ˈkwɪn tɪl, -taɪl/
Statistics. a quantile for the special case of five equal proportions.
Astrology. a quintile aspect.
Astrology. of or pertaining to the aspect of two heavenly bodies that are one fifth of the zodiac, or 72°, apart.
1600-10; < Latin quīnt(us) fifth + -ile (as in quartile) Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for quintile
  • Forty percent of the value of this exclusion currently goes to households in the top income quintile.
  • The bottom quintile had the lowest pre-recession savings rates.
  • Equal sums were invested in each quintile, and dividends were reinvested.
  • It also means that as education becomes even more important to earnings, the poorer quintile is more and more locked into poverty.
  • The system is barely progressive, with the next to lowest quintile paying a higher share of its income than the top.
  • Further the top quintile is in general best positioned to use the free services and tools provided.
  • Time and time again, in all sorts of measurements, you're buried in the bottom quintile.
  • The hospitals performing in the top quintile received bonuses of an unspecified amount.
British Dictionary definitions for quintile


noun (astrology)
an aspect of 72° between two heavenly bodies
a fifth part of a distribution
Word Origin
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
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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
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