gypsum(redirected from Calcium sulfate dihydrate)
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Related to Calcium sulfate dihydrate: magnesium sulfate heptahydrate
A widespread colorless, white, or yellowish mineral, CaSO4·2H2O, used in the manufacture of plaster of Paris, various plaster products, and fertilizers.
[Middle English gipsum, from Latin gypsum, from Greek gupsos, probably of Semitic origin; akin to Arabic jibs, jiṣṣ, jaṣṣ, from Akkadian gaṣṣu.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Minerals) a colourless or white mineral sometimes tinted by impurities, found in beds as an evaporite. It is used in the manufacture of plaster of Paris, cement, paint, school chalk, glass, and fertilizer. Composition: hydrated calcium sulphate. Formula: CaSO4.2H2O. Crystal structure: monoclinic
[C17: from Latin, from Greek gupsos chalk, plaster, cement, of Semitic origin]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a soft mineral, hydrous calcium sulfate, CaSO4∙2H2O, occurring in massive or fibrous form and also as alabaster and selenite: used to make plaster of Paris and as a fertilizer.
[1640–50; < Latin < Greek gýpsos chalk, gypsum]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
A colorless, white, or pinkish mineral consisting of calcium sulfate. Gypsum occurs as individual blade-shaped crystals or as massive beds in sedimentary rocks. It is used in manufacturing plasterboard, cement, and fertilizers. It is the mineral used to represent a hardness of 2 on the Mohs scale.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
gypsum- From Semitic, a relative or ancestor of Arabic jibs and Hebrew gephes, "plaster."
See also related terms for plaster.
Farlex Trivia Dictionary. © 2012 Farlex, Inc. All rights reserved.
A mineral or rock composed of calcium sulfate and water.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
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|Noun||1.||gypsum - a common white or colorless mineral (hydrated calcium sulphate) used to make cements and plasters (especially plaster of Paris)|
atomic number 20, Ca, calcium - a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
alabaster - a compact fine-textured, usually white gypsum used for carving
gesso - gypsum or plaster of Paris spread on a surface to make it suitable for painting or gilding (or a surface so prepared)
terra alba - finely pulverized gypsum used especially as a pigment
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
gypsum[ˈdʒɪpsəm] N → yeso m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
gypsum[ˈdʒɪpsəm] n → gypse m
Collins English/French Electronic Resource. © HarperCollins Publishers 2005
n → Gips m
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007