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sul'fur diox'ide



Chem.
a colorless, nonflammable, water-soluble, suffocating gas, SO2, formed when sulfur burns: used chiefly in the manufacture of chemicals such as sulfuric acid, in preserving fruits and vegetables, and in bleaching, disinfecting, and fumigating.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

sulfur butterflysulfur dye
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