calcium sulfate


: a white salt CaSO4 that occurs especially as anhydrite, gypsum, and plaster of paris and that in hydrated form is used as a building material and in anhydrous form is used as a drying agent

Examples of calcium sulfate in a Sentence

Recent Examples on the Web The top of a growing black smoker consists of calcium sulfate, or anhydrite. Robert Kunzig, Discover Magazine, 11 Nov. 2019 Most industrial companies use calcium sulfate. Janelle Bitker, San Francisco Chronicle, 19 July 2021 Too much sulfur dioxide in damp air will trigger a chemical reaction in limestone, causing white calcium carbonate to convert to black calcium sulfate. Veronique Greenwood, Discover Magazine, 30 Dec. 2011 For good or ill, Mars also has vast salt deposits made of calcium sulfate, iron sulfate and magnesium sulfate. Korey Haynes, Discover Magazine, 25 June 2019 Depending on the coagulant used during production, like magnesium chloride (called nigari) or calcium sulfate, tofu supplies good amounts of these minerals, too. Matthew Kadey, Outside Online, 18 Aug. 2022 Weighing in at one ounce under a pound, this bread was made with a number of ingredients that required a Google search to identify, including leavening agents calcium sulfate, sodium acid pyrophosphate and monocalcium phosphate and palm wax. Ariel Cheung,, 11 Mar. 2022 Gypsum – calcium sulfate – is an amendment that improves clay soils. oregonlive, 7 Feb. 2022 After exposure to water, the calcium sulfate molecule will dissociate. oregonlive, 7 Feb. 2022

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'calcium sulfate.' 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

1868, in the meaning defined above

Time Traveler
The first known use of calcium sulfate was in 1868

Dictionary Entries Near calcium sulfate

Cite this Entry

“Calcium sulfate.” Dictionary, Merriam-Webster, Accessed 24 Apr. 2024.

Kids Definition

calcium sulfate

: a white odorless compound of calcium that is used especially in building materials and to dry other substances

Medical Definition

calcium sulfate

: a white calcium salt CaSO4 used especially as a diluent in tablets and in hydrated form as plaster of paris

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