/ Dictionary / Index T triumvir: Meaning and Definition of Find definitions for: tri•um•vir Pronunciation: (trī-um'vur), [key] — pl. -virs, -vi•ri one of three officers or magistrates mutually exercising the same public function. one of three persons associated in any office or position of authority. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: triumvir (Thesaurus) triumphant triumvirate Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language