/ Dictionary / Index Q quadricentennial: Meaning and Definition of Find definitions for: quad•ri•cen•ten•ni•al Pronunciation: (kwod"ru-sen-ten'ē-ul), [key] — adj. of, pertaining to, or marking the completion of a period of four hundred years. —n. a quadricentennial anniversary. its celebration. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. quadric quadriceps Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language