gypsum

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That would be gypsum, the name given to the soft mineral - a combination of calcium sulfate and water - that has been excavated and mined in Kansas since the 1860s.

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Definitions (6)

Toggle American Heritage definitions American Heritage Dictionary (1)

  1. noun A widespread colorless, white, or yellowish mineral, CaSO4·2H2O, used in the manufacture of plaster of Paris, various plaster products, and fertilizers.

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Examples (50)

  • The utility said a 147-acre retention pond leaked water laced with calcium sulfate, a component of gypsum, which is released when coal burns. —  Top Stories - Google News
  • It is often made from gypsum, a common mineral that can be mined or manufactured from the byproducts of coal-fired power plants. —  Marketplace
  • That would be gypsum, the name given to the soft mineral - a combination of calcium sulfate and water - that has been excavated and mined in Kansas since the 1860s. —  LJWorld.com stories: News
  • The gypsum, a material commonly used in wallboard, is stored dry in a nearby landfill.
  • Known as dihydrate in construction chemistry, gypsum is a water-containing ... —  PhysOrg.com - latest science and technology news stories
 

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Etymologies (2)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. Middle English gipsum, from Latin gypsum, from Greek gupsos, probably of Semitic origin; akin to Arabic jibs, jiṣṣ, jaṣṣ, from Akkadian gaṣṣu.

Toggle Century etymologies Century Dictionary (1)

  1. Formerly also gypse, gipse; from Old French gipse, gypse, French gypse = Spanish gipso = Portuguese gypso = Italian gesso, plaster, from Latin gypsum, neuter, from Greek γύψος, feminine, chalk, gypsum; prob. of Eastern origin: cf. Persian jabsīn, lime, Arabic jibs, jibsīn, plaster, gypsum.
 

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/ˈdʒɪpsəm/
by American Heritage

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