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quindecennial
quindecennial definition
quin·de·cen·nial (kwin′di sen′ē əl)
adjective
- happening every fifteen years
- 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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