bi·​sul·​fite (ˌ)bī-ˈsəl-ˌfīt How to pronounce bisulfite (audio)
: an acid sulfite

Examples of bisulfite in a Sentence

Recent Examples on the Web Sodium bisulfite is an ingredient in many toilet bowl cleaning agents. Scott Lafee, San Diego Union-Tribune, 7 June 2022 At the low end of the spectrum are wild shrimp that have been treated with chemical additives (sodium bisulfite and tripolyphosphate). Melissa Clark, New York Times, 15 Oct. 2019 Sodium bisulfite is added to remove much of the chlorine. Don Behm, Milwaukee Journal Sentinel, 27 Mar. 2018 But plant operators on Feb. 20 failed to follow standard procedures for adjusting the amount of bisulfite used at the plant in response to changing turbidity, records show. Don Behm, Milwaukee Journal Sentinel, 27 Mar. 2018

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

Word History


French, from bi- + sulfite

First Known Use

1819, in the meaning defined above

Time Traveler
The first known use of bisulfite was in 1819

Dictionary Entries Near bisulfite

Cite this Entry

“Bisulfite.” Dictionary, Merriam-Webster, Accessed 8 Dec. 2023.

Medical Definition


variants or chiefly British bisulphite
: an acid sulfite
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