Breadcrumb Home > Dictionary > Index Q quinquennium: Meaning and Definition of Find definitions for: quin•quen•ni•um Pronunciation: (kwin-kwen'ē-um, kwing-), [key] — pl. -quen•ni•ums, -quen•ni•a a period of five years. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: quinquennium (Thesaurus) quinquennial quinquepartite TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: terraincognita Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language