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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
From the M-W Editors
Recent Examples of gypsum from the Web
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Hydrogen sulfide is a flammable, hazardous gas, and a byproduct of rainwater percolating with gypsum drywall disposed at the dump, said Jim Riffle of Auburn Environmental.
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Recently in Mexico, scientists woke up microbes that were dormant for as long as 50,000 years in giant gypsum crystals.
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Wear a dust mask when sanding to block airborne gypsum and silica particles.
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Other soils have a high amount of sulfates, a compound found in the common mineral gypsum that breaks down both metals and concrete.
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Colors signify different rock types: The yellowish, orange and green areas are limestones, sandstones and gypsum.
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Ripples at White Sands National Monument (the sand is gypsum!).
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.
Origin and Etymology of gypsum
Latin, from Greek gypsos
GYPSUM Defined for English Language Learners
gypsum
playDefinition of gypsum for English Language Learners
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: a white mineral that is used to make plaster of paris
Medical Dictionary
gypsum
playMedical 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
Learn More about gypsum
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Spanish Central: Translation of gypsum Nglish: Translation of gypsum for Spanish speakers Britannica English: Translation of gypsum for Arabic speakers Britannica.com: Encyclopedia article about gypsum
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