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sodium hydroxide
noun
: a white brittle solid NaOH that is a strong caustic base used especially in making soap, rayon, and paper
Examples of sodium hydroxide in a Sentence
Recent Examples on the Web
The natural oils are then mixed with either potassium hydroxide to create a liquid soap or sodium hydroxide to create a solid soap.
—Patricia Shannon, Southern Living, 6 Sep. 2024
For Christmas before his 7th birthday, Heman was given a chemistry set that came with a sample of sodium hydroxide.
—Jeffrey Kluger, TIME, 15 Aug. 2024
Removing them typically involves toxic reagents such as hydrofluoric acid, nitric acid, or sodium hydroxide.
—IEEE Spectrum, 17 June 2024
By the mid-1980s, many manufacturers had removed sodium hydroxide from its relaxer ingredient list.
—Linda Villarosa Robin Miles Krish Seenivasan Alec K. Redfearn, New York Times, 13 June 2024
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Word History
First Known Use
1885, in the meaning defined above
Dictionary Entries Near sodium hydroxide
Cite this Entry
“Sodium hydroxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sodium%20hydroxide. Accessed 21 Nov. 2024.
Kids Definition
sodium hydroxide
noun
: a white brittle solid that is strongly alkaline and is used especially in making soap, rayon, and paper
Medical Definition
sodium hydroxide
noun
: a white brittle deliquescent solid NaOH that dissolves readily in water to form a strongly alkaline and caustic solution and that is used in pharmacy as an alkalizing agent
called also caustic soda
More from Merriam-Webster on sodium hydroxide
Britannica.com: Encyclopedia article about sodium hydroxide
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