a granular igneous rock consisting of a mix of light and dark minerals, the former being calcic plagioclase feldspars, and the latter orthorhombic pyroxenes.

1875–80; < Norwegian norit. See Norway, -ite1

noritic [naw-rit-ik] , adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
norite (ˈnɔːraɪt)
a variety of gabbro composed mainly of hypersthene and labradorite feldspar
[C19: from Norwegian norit, from Norge Norway + -it-ite1]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
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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Example sentences
The marginal intrusive rocks include coarse diorite and some norite.
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