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Meaning of bisulfate

bi•sul•fate

Pronunciation: (bī-sul'fāt), [key]
— n. Chem.
  1. 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.