sulfurous acid

noun

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

Examples of sulfurous acid in a Sentence

Recent Examples on the Web Otherwise, the sulfur dioxide released from the bubbling lava would turn the watery fluid in your eyes’ mucus membranes into sulfurous acid. Sofie Bates, Popular Mechanics, 30 June 2020

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'sulfurous acid.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1790, in the meaning defined above

Time Traveler
The first known use of sulfurous acid was in 1790

Dictionary Entries Near sulfurous acid

Cite this Entry

“Sulfurous acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sulfurous%20acid. Accessed 23 Jun. 2024.

Kids Definition

sulfurous acid

noun
: a weak acid known especially in mixtures of sulfur dioxide with water and through its salts and used in bleaching

Medical Definition

sulfurous acid

noun
: 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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