/ Dictionary / Index T trinary: Meaning and Definition of Find definitions for: tri•na•ry Pronunciation: (trī'nu-rē), [key] — adj. consisting of three parts, or proceeding by three; ternary. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trinal trination Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language