peridotite[per′ə dō′tīt′, pə rid′ə tīt′]
peridotite definition by Webster's New World
any of several coarsegrained, dark igneous rocks consisting mainly of olivine and other ferromagnesian minerals
Origin: French péridotite ; from péridot, peridot
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- peridotitic adjective
peridotite definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Any of a group of igneous rocks composed mainly of olivine and various pyroxenes and having a granitelike texture.
peridotite - Science Definition
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.