11 Trending Words of 2014


[mag-nuh-sahyt] /ˈmæg nəˌsaɪt/
a mineral, magnesium carbonate, MgCO 3 , having a characteristic conchoidal fracture and usually occurring in white masses.
1805-15; magnes(ia) + -ite1; compare French magnésite Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for magnesite
  • The carbonate that is produced, magnesite, is a commercial product one could look up.
  • Molded of magnesite cement, they are lighted by hidden electric bulbs.
  • magnesite and other carbonates are common accessories.
  • Privatization efforts were continuing in the magnesite and refractories industries.
British Dictionary definitions for magnesite


a white, colourless, or lightly tinted mineral consisting of naturally occurring magnesium carbonate in hexagonal crystalline form: a source of magnesium and also used in the manufacture of refractory bricks. Formula: MgCO3
Word Origin
C19: from magnesium + -ite1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Encyclopedia Article for magnesite

the mineral magnesium carbonate (MgCO3), a member of the calcite group of carbonate minerals that is a principal source of magnesium. The mineral has formed as an alteration product from magnesium-rich rocks or through the action of magnesium-containing solutions upon calcite. Notable deposits are those at Radenthein, Austria; the Liaotung Peninsula, Liaoning Province, China; and Clark County, Nev., U.S. Iron is usually present, and a complete chemical substitution series exists between magnesite and siderite in which iron replaces magnesium. Magnesite is used as a refractory material, a catalyst and filler in the production of synthetic rubber, and a material in the preparation of magnesium chemicals and fertilizers. For detailed physical properties, see carbonate mineral (table)

Learn more about magnesite with a free trial on
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source

Word of the Day

Difficulty index for magnesite

Some English speakers likely know this word

Word Value for magnesite

Scrabble Words With Friends