/ Dictionary / Index T trifecta: Meaning and Definition of Find definitions for: tri•fect•a Pronunciation: (trī'fek"tu), [key] — n. a type of bet, esp. on horse races, in which the bettor must select the first three finishers in exact order. a race in which such bets are made. Cf. superfecta. Also called triple. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trifacial neuralgia trifid Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language