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
The park is renowned for its wave-like dunes made of stark-white gypsum sand.
—
Evie Carrick,
Travel + Leisure,
1 July 2026
Embedded in hardened gypsum soil, the footprints were surrounded by ancient grass seeds radiocarbon dated to between 21,130 and 22,860 years ago.
—
Joe Yogerst,
CNN Money,
27 June 2026
Zidack says lime, dolomitic lime, gypsum, and bone meal are all suitable alternative sources.
—
Gemma Johnstone,
The Spruce,
25 May 2026
In one of the most fascinating Roman burials ever uncovered in Colchester, the remains of a woman surfaced during an archaeological investigation who was buried with objects and valuable substances such as frankincense and gypsum.
—
Maria Mocerino,
Interesting Engineering,
17 May 2026
See All Example Sentences for gypsum
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Evie Carrick,
Travel + Leisure,
1 July 2026
Embedded in hardened gypsum soil, the footprints were surrounded by ancient grass seeds radiocarbon dated to between 21,130 and 22,860 years ago.
—
Joe Yogerst,
CNN Money,
27 June 2026
Zidack says lime, dolomitic lime, gypsum, and bone meal are all suitable alternative sources.
—
Gemma Johnstone,
The Spruce,
25 May 2026
In one of the most fascinating Roman burials ever uncovered in Colchester, the remains of a woman surfaced during an archaeological investigation who was buried with objects and valuable substances such as frankincense and gypsum.
—
Maria Mocerino,
Interesting Engineering,
17 May 2026
See All Example Sentences for gypsum
Cite this Entry
“Gypsum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/gypsum. Accessed 6 Jul. 2026.
Copy CitationKids Definition
gypsum
noun
gyp·sum
ˈjip-səm 
: a colorless mineral that consists of calcium sulfate occurring in crystals or masses and that is used especially as a soil improver and in making plaster of paris
Medical Definition
gypsum
noun
gyp·sum
ˈjip-səm
: 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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