/ Dictionary / Index T Tennant: Meaning and Definition of Find definitions for: Ten•nant Pronunciation: (ten'unt), [key] 1761–1815, English chemist: discoverer of osmium and iridium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Tenn. tennantite Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language