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Noun: gypsum  jip-sum
  1. A common white or colourless mineral (hydrated calcium sulphate) used to make cements and plasters (especially plaster of Paris)
    "Gypsum board is widely used in modern construction for interior walls"

Derived forms: gypsums

Type of: calcium sulfate, calcium sulphate, mineral

Part of: plaster, plaster of Paris

Encyclopedia: Gypsum, KS