/ Dictionary / Index T Tridentum: Meaning and Definition of Find definitions for: Tri•den•tum Pronunciation: (trī-den'tum), [key] — n. ancient name of Trent, Italy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Tridentine tridimensional Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language