/ Dictionary / Index T trierarchy: Meaning and Definition of Find definitions for: tri•er•ar•chy Pronunciation: (trī'u-rär"kē), [key] — pl. -chies. the office of a trierarch. trierarchs collectively. (in Athens) the duty of fitting out or furnishing triremes for the public service. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trierarch tries Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language