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norite

[nawr-ahyt] /ˈnɔr aɪt/
noun
1.
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
1875-1880
1875-80; < Norwegian norit. See Norway, -ite1
Related forms
noritic
[naw-rit-ik] /nɔˈrɪt ɪk/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for norite's

norite

/ˈnɔːraɪt/
noun
1.
a variety of gabbro composed mainly of hypersthene and labradorite feldspar
Word Origin
C19: from Norwegian norit, from Norge Norway + -it-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
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norite's in Science
norite
  (nôr'īt)   
  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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