/ Dictionary / Index T triunity: Meaning and Definition of Find definitions for: tri•u•ni•ty Pronunciation: (trī-y'ni-tē), [key] — pl. -ties. Trinity (defs. 4, 5). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. triunitarian trivalent Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language