gyp·​sum | \ˈjip-səm \

Definition of gypsum 

1 : a widely distributed mineral consisting of hydrous calcium sulfate that is used especially as a soil amendment and in making plaster of paris

2 : drywall

Examples of gypsum in a Sentence

Recent Examples on the Web

Some of the uses include gypsum board, brick manufacturing and emulsions. Katherine Feser, Houston Chronicle, "Plaza Group acquires line of business from Truth Industries," 12 July 2018 The National Gypsum Company manufactures gypsum board products at a plant based in Waukegan. Yadira Sanchez Olson, Lake County News-Sun, "Waukegan Ray Bradbury statue fundraising halfway to $125,000 goal," 3 May 2018 The northern half is another story: an industrial expanse that includes Con Edison switchyards, a gypsum manufacturing facility and Entergy’s Indian Point Energy Center, with its domed nuclear reactors set on 240 riverfront acres. Susan Hodara, New York Times, "Buchanan, N.Y.: A Waterfront Village Braces for Big Changes," 27 June 2018 That cement is a complex mix derived from limestone, clay and gypsum. Kevin Davenport, idahostatesman, "How a 20-minute fire in the fatal I-84 crash ruined a concrete overpass," 22 June 2018 The suit faulted Barclay Friends and its architects for not ensuring that the gypsum board had been installed. Craig R. Mccoy,, "Lawsuit alleges 'agonizing and lonely deaths' in Barclay Friends fire," 15 June 2018 In areas with sodic soils, gypsum (calcium sulfate) is effective at removing salt and building structure., "Should I pinch off blueberry blossoms? What fertilizer is best? Ask an expert," 28 Apr. 2018 Much less common, however, is gypsum sand, which gives White Sands National Monument in New Mexico its name. Discover Magazine, "20 Things You Didn't Know About ... Sand," 18 May 2018 Although the dump has not accepted methane-rich residential garbage for many years, wood, gypsum board and other construction debris also produce gases, including methane and hydrogen sulfide. Jesse Leavenworth, Courant Community, "Work At Manchester Dump Meant To Curb Stink," 11 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'gypsum.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of gypsum

14th century, in the meaning defined at sense 1

History and Etymology for gypsum

Latin, from Greek gypsos

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Time Traveler for gypsum

The first known use of gypsum was in the 14th century

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English Language Learners Definition of gypsum

: a white mineral that is used to make plaster of paris


gyp·​sum | \ˈjip-səm \

Medical Definition of gypsum 

: a widely distributed mineral CaSO4·2H2O consisting of hydrous calcium sulfate that is used especially as a soil amendment and in making plaster of paris

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More from Merriam-Webster on gypsum

Spanish Central: Translation of gypsum

Nglish: Translation of gypsum for Spanish Speakers

Britannica English: Translation of gypsum for Arabic Speakers Encyclopedia article about gypsum

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