noun, Chemistry.
a salt or ester of sulfurous acid.
any sulfite-containing compound, especially one that is used in foods or drug products as a preservative and that can cause severe allergic reactions in susceptible individuals: use in fresh fruits and vegetables banned by the FDA in 1986.

sulfite sul·fite (sŭl’fīt’)
A salt or an ester of sulfurous acid.
sul·fit’ic (-fĭt’ĭk) adj.
A salt or ester of sulfurous acid, containing the group SO3.


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