quincentenary [kwin sen′tə ner ē, kwin′sen ten′ər ē]
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
of a 500th anniversary
noun pl. quincentenaries
a 500th anniversary or its commemoration
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
noun pl. quin·cen·ten·a·ries
A 500th anniversary or celebration. adjective
Of or relating to a span of 500 years or to a 500th anniversary.
Origin: From Latin quīngentī, quīncentī, five hundred (on the model of such words as tercentenary); see penkwe in Indo-European roots.