sulfurous acid
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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.
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Origin of sulfurous acid
First recorded in 1780–90
Words nearby sulfurous acid
sulfuric acid, sulfuric anhydride, sulfuric ether, sulfurize, sulfurous, sulfurous acid, sulfur spring, sulfur trioxide, sulfuryl, sulfuryl chloride, sulfuryl group
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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Scientific definitions for sulfurous acid
sulfurous acid
A colorless solution of sulfur dioxide in water, characterized by a suffocating sulfurous odor. It is used as a bleaching agent, preservative, and disinfectant. Chemical formula: H2SO3.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.