quintile [kwin-til, -tahyl] ExamplesWord Origin noun

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


  1. 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) 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)


  • British Dictionary definitions for quintile quintile noun astrology

    1. an aspect of 72° between two heavenly bodies
    2. a fifth part of a distribution

    Word Origin for quintile C17: from Latin quintus fifth Word Origin and History for quintile n.

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

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