/ Dictionary / Index H hexafluoride: Meaning and Definition of Find definitions for: hex•a•fluor•ide Pronunciation: (hek"su-floor'īd, -flôr'-, -flōr'-), [key] — n. a fluoride containing six atoms of fluorine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hexaethyl tetraphosphate hexagon 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