Meaning of bisulfite

bi•sul•fite

Pronunciation: (bī-sul'fīt), [key]
— n. Chem.
  1. a salt of sulfurous acid, containing the HSO group; an acid sulfite; a hydrogen sulfite, as sodium bisulfite, NaHSO.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.