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.

1780–90; sulf(ur) + -ite1

sulfitic [suhl-fit-ik] , adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Medical Dictionary

sulfite sul·fite (sŭl'fīt')
A salt or an ester of sulfurous acid.

sul·fit'ic (-fĭt'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
sulfite   (sŭl'fīt')  Pronunciation Key 
A salt or ester of sulfurous acid, containing the group SO3.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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