sulfurous acid
noun Chemistry.
a colorless liquid, H2SO3, having a suffocating odor, obtained by dissolving sulfur dioxide in water, known mainly by its salts, which are sulfites: used chiefly in organic synthesis and as a bleach.
Origin of sulfurous acid
First recorded in 1780–90
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
sulfurous acid
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