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phosphorous acid
noun
: a deliquescent crystalline acid H3PO3 used especially as a reducing agent and in making phosphites
Examples of phosphorous acid in a Sentence
Recent Examples on the Web
Sodium hydroxide and phosphorous acid are used to remove gums and other undesirable compounds in oil, according to Dansby.
—Sudiksha Kochi, USA TODAY, 21 Mar. 2022
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Word History
First Known Use
1788, in the meaning defined above
Dictionary Entries Near phosphorous acid
Cite this Entry
“Phosphorous acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/phosphorous%20acid. Accessed 21 Dec. 2024.
Medical Definition
phosphorous acid
noun
: a deliquescent crystalline acid H3PO3 used especially as a reducing agent and in making phosphites
More from Merriam-Webster on phosphorous acid
Britannica.com: Encyclopedia article about phosphorous acid
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