/ Dictionary / Index T ternary operation: Meaning and Definition of Find definitions for: ter'nary opera'tion Pronunciation: [key] an operation in a mathematical system by which three elements are combined to yield a single result. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ternary form ternate Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language