/ Dictionary / Index D domino effect: Meaning and Definition of Find definitions for: dom'ino effect" Pronunciation: [key] the cumulative effect that results when one event precipitates a series of like events. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. domino domino paper Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language