/ Dictionary / Index B bisulfate: Meaning and Definition of Find definitions for: bi•sul•fate Pronunciation: (bī-sul'fāt), [key] — n. Chem. a salt of sulfuric acid, containing the HSO group; an acid sulfate; a hydrogen sulfate, as sodium bisulfate, NaHSO. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bisulcate bisulfide Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language