/ Dictionary / Index B bromine pentafluoride: Meaning and Definition of Find definitions for: bro'mine pentafluor'ide Pronunciation: [key] — Chem. Chem. a colorless, corrosive liquid, BrF, used as an oxidizer in liquid rocket propellants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bromine bromism Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language