sulfurous acid

noun

Definition of sulfurous acid

: a weak unstable dibasic acid H2SO3 known in solution and through its salts and used as a reducing and bleaching agent

First Known Use of sulfurous acid

1790

in the meaning defined above

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Medical Dictionary

sulfurous acid

noun

medical Definition of sulfurous acid

: a weak unstable dibasic acid H2SO3 known in solution and through its salts and used as a reducing and bleaching agent and in medicine as an antiseptic

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