/ Dictionary / Index T trination: Meaning and Definition of Find definitions for: tri•na•tion Pronunciation: (trī-nā'shun), [key] — n. celebration of Mass three times on the same day by the same priest. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trinary Trincomalee 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