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calcite

[kal-sahyt]

Origin

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noun

one of the commonest minerals, calcium carbonate, CaCO₃, found in a great variety of crystalline forms: a major constituent of limestone, marble, and chalk; calc-spar.

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Origin:
1840–50; calc- + -ite¹

Related forms

cal·cit·ic

[kal-sit-ik] , adjective

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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Calcite is always a great word to know.

So is doohickey. Does it mean:

a gadget; dingus; thingumbob.

a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.

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Collins

World English Dictionary

calcite (ˈkælsaɪt)

—n
	a colourless or white mineral (occasionally tinged with impurities), found in sedimentary and metamorphic rocks, in veins, in limestone, and in stalagmites and stalactites. It is used in the manufacture of cement, plaster, paint, glass, and fertilizer. Composition: calcium carbonate. Formula: CaCO₃. Crystal structure: hexagonal (rhombohedral)

calcitic

—*adj*

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline

Word Origin & History

calcite

1849, from Ger. Calcit, coined by Austrian mineralogist Wilhelm Karl von Hardinger (1795-1871), from L. calx (gen. calcis) "lime" + mineral suffix -ite (Ger. -it).

American Heritage

Science Dictionary

calcite

(kāl'sīt') Pronunciation Key
A usually white, clear, pale-yellow or blue orthorhombic mineral. Calcite occurs in many different forms and is the main component of chalk, limestone, and marble. It is a polymorph of aragonite. Chemical formula: CaCO₃.

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calcite

cal·cite