/ Dictionary / Index E exacta: Meaning and Definition of Find definitions for: ex•act•a Pronunciation: (ig-zak'tu), [key] — n. a type of bet, esp. on horse races, in which the bettor must select the first- and second-place finishers in exact order. a race in which such bets are made. Cf. quinella. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: exacta (Thesaurus) exact exact differential Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language