/ Dictionary / Index Q quadrisyllable: Meaning and Definition of Find definitions for: quad•ri•syl•la•ble Pronunciation: (kwod'ru-sil"u-bul), [key] — n. a word of four syllables. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. quadrisect quadrivalent Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language