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norite

 - 4 dictionary results

nor⋅ite

  [nawr-ahyt]
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–noun
a granular igneous rock consisting of a mix of light and dark minerals, the former being calcic plagioclase feldspars, and the latter orthorhombic pyroxenes.
Origin:
1875–80; < Norw norit. See Norway, -ite 1

Related forms:
nor⋅it⋅ic  [naw-rit-ik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To norite
gab·bro   (gāb'rō)   
n.   pl. gab·bros
A usually coarse-grained igneous rock composed chiefly of calcic plagioclase and pyroxene. Also called norite.

[Italian, perhaps from Latin glaber, bald, beardless.]
gab·bro'ic (gā-brō'ĭk), gab'broid' (gāb'roid') adj.
nor·ite   (nôr'īt)   
n.  See gabbro.

[Norwegian Norge, Norway + -ite1.]
nor·it'ic (nô-rĭt'ĭk) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Science Dictionary
norite   (nôr'īt)  Pronunciation Key 

  1. See gabbro.

  2. A coarse-grained igneous rock, very similar to gabbro but containing orthopyroxene instead of clinopyroxene.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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