peridotite
a coarsely granular igneous rock composed chiefly of olivine with an admixture of various other minerals.
Origin of peridotite
1Other words from peridotite
- per·i·do·tit·ic [per-i-doh-tit-ik, puh-rid-uh-], /ˌpɛr ɪ doʊˈtɪt ɪk, pəˌrɪd ə-/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
British Dictionary definitions for peridotite
/ (ˌpɛrɪˈdəʊtaɪt) /
a dark coarse-grained ultrabasic plutonic igneous rock consisting principally of olivine
Origin of peridotite
1Derived forms of peridotite
- peridotitic (ˌpɛrɪdəʊˈtɪtɪk), adjective
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
Scientific definitions for peridotite
[ pĕr′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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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