| 单词 | gypsum |
| 释义 | gypsum (once / 5301 pages) n Gypsum is a mineral — specifically, hydrated calcium sulfate — used in making many types of cement and plaster, especially plaster of Paris. It’s also in cement, tofu, and beer. Yum? Gypsum is everywhere! If you're studying chemistry or just want to build something, you may encounter gypsum, which is a white, chalky (or sometimes colorless) mineral used to make plaster of Paris and other building materials such as cement. Plaster of Paris is named from the massive gypsum deposits of Montmartre in Paris. But you won’t just find gypsum in art class. Besides its use in building materials, gypsum is used in making fertilizer and tofu. WORD FAMILYgypsum: gypsums USAGE EXAMPLESIn the meantime, he said, “there are just enormous quantities of gypsum that are washing away.” The New Yorker(Dec 25, 2016) U.S. farmers have been treating fields with gypsum since George Washington was president. Science Magazine(Nov 17, 2016) Banner’s main drywall supplier was Clearwater company Black Bear Gypsum, said Dennis Mead, a Banner employee whose son David Mead owned the firm. Washington Times(Nov 06, 2016) n a common white or colorless mineral (hydrated calcium sulphate) used to make cements and plasters (especially plaster of Paris) Hypo|Hyper alabaster a compact fine-textured, usually white gypsum used for carving gessogypsum or plaster of Paris spread on a surface to make it suitable for painting or gilding (or a surface so prepared) terra albafinely pulverized gypsum used especially as a pigment mineral solid homogeneous inorganic substances occurring in nature having a definite chemical composition calcium sulfate, calcium sulphatea white salt (CaSO4) |
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