Home › Words › Q › quinquenniumquinquennium/kwɪŋˈkwɛniəm/quinquennium means A period of five years.quinquennium is pronounced /kwɪŋˈkwɛniəm/.EtymologyFrom Latin quīnquennium, from quinquennis (“5-year”) + -ium (suffix forming abstract nouns).nounA period of five years.e.g.“During the quinquennium from 1991 to 1995, infant mortality increased.”Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.quinquenniad 88% match — Synonym of quinquennium: A 5-year period. vs quinquennium →quinquennially 84% match — Every five years. vs quinquennium →quinquennalia 77% match — The festival and religious rituals sometimes observed celebrating a Roman emperor's 5th year of rule. vs quinquennium →pentennial 76% match — Synonym of quinquennial: occurring every five years. vs quinquennium →quincentennium 74% match — A period of five hundred years, half a millennium. vs quinquennium →penteteric 74% match — Synonym of quinquennial (“related to or characterized by an five-year period”) vs quinquennium →quintade 71% match — Synonym of pentad: A 5-year period, particularly in reference to the first and second halves of calendrical decades. vs quinquennium →quadrennium 68% match — A period of 4 years, particularly (historical) the sets of four years in the ancient Egyptian and Greek calendars. vs quinquennium →