/ Dictionary / Index Q quadrennial: Meaning and Definition of Find definitions for: quad•ren•ni•al Pronunciation: (kwo-dren'ē-ul), [key] — adj. occurring every four years: a quadrennial festival. of or lasting for four years: a quadrennial period. —n. an event occurring every four years, as an anniversary or its celebration. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. quadrel quadrennium Related Content Daily Word Quiz: ounterfeit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language