/ Dictionary / Index I intervention: Meaning and Definition of Find definitions for: in•ter•ven•tion Pronunciation: (in"tur-ven'shun), [key] — n. the act or fact of intervening. interposition or interference of one state in the affairs of another. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: intervention (Thesaurus) intervenor interventionism Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language