bisulphite

noun Chemistry.

1. a salt of sulfurous acid, containing the HSO3− group; an acid sulfite; a hydrogen sulfite, as sodium bisulfite, NaHSO3.

noun

1. a salt or ester of sulphurous acid containing the monovalent group -HSO 3 or the ion HSO 3 –
2. (modifier) consisting of or containing the group -HSO 3 or the ion HSO 3 –bisulphite ion

n.

1. The univalent inorganic acid group HSO3.
2. A salt of sulfurous acid containing this group.