/ Dictionary / Index T trifluoride: Meaning and Definition of Find definitions for: tri•fluor•ide Pronunciation: (trī-floor'īd, -flôr'-, -flōr'-), [key] — n. Chem. a fluoride containing three atoms of fluorine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trifluoperazine trifluorochloromethane Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language