quindecennial Hear it!

quindecennial definition

quin·de·cen·nial (kwin′di sen′ē əl)

adjective

  1. happening every fifteen years
  2. lasting fifteen years

Etymology: < L quindecim (see quindecagon) + -ennial, as in biennial

noun

a fifteenth anniversary or its commemoration

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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