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Meaning of sulfur dioxide

sul'fur diox'ide

Pronunciation: [key]
— Chem. Chem.
  1. a colorless, nonflammable, water-soluble, suffocating gas, SO, 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.
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