/ Dictionary / Index T triens: Meaning and Definition of Find definitions for: tri•ens Pronunciation: (trī'enz), [key] — pl. tri•en•tes a copper coin of ancient Rome, issued during the Republic, a third part of an as. tremissis (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. triennium trier Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language