quintile Hear it!

quintile definition

quin·tile (kwin′til, -tīl′)

noun

  1. Astrol. the aspect of two celestial bodies 72°, or one fifth of a circle, apart
  2. Statistics
    1. any of the values in a series dividing the distribution of the individuals in the series into five groups of equal frequency
    2. any of these groups

Etymology: < L quintus, a fifth (see quintet) + -ile

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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