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peridotite

[per-i-doh-tahyt, puh-rid-uh-tahyt] /ˈpɛr ɪˌdoʊ taɪt, pəˈrɪd əˌtaɪt/
noun
1.
a coarsely granular igneous rock composed chiefly of olivine with an admixture of various other minerals.
Origin of peridotite
1895-1900
1895-1900; < French; see peridot, -ite1
Related forms
peridotitic
[per-i-doh-tit-ik, puh-rid-uh-] /ˌpɛr ɪ doʊˈtɪt ɪk, pəˌrɪd ə-/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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British Dictionary definitions for peridotite

peridotite

/ˌpɛrɪˈdəʊtaɪt/
noun
1.
a dark coarse-grained ultrabasic plutonic igneous rock consisting principally of olivine
Derived Forms
peridotitic (ˌpɛrɪdəʊˈtɪtɪk) adjective
Word Origin
C19: from French, from peridot
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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peridotite in Science
peridotite
  (pěr'ĭ-dō-tīt', pə-rĭd'ə-)   
A coarse-grained igneous rock that consists mainly of olivine and pyroxene. It is believed to be one of the main constituent rocks of the Earth's mantle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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14
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