anorthosite
a granular plutonic rock composed largely of labradorite or a more calcic feldspar.
Origin of anorthosite
1Other words from anorthosite
- an·or·tho·sit·ic [an-aw-thuh-sit-ik], /ænˌɔ θəˈsɪt ɪk/, adjective
Words Nearby anorthosite
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use anorthosite in a sentence
In Canada great portions of the eastern portion of the Dominion are formed of gabbros, norite, anorthosite and allied rock types.
British Dictionary definitions for anorthosite
/ (ænˈɔːθəˌsaɪt) /
a coarse-grained plutonic igneous rock consisting almost entirely of plagioclase feldspar
Origin of anorthosite
1Collins 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 anorthosite
[ ăn-ôr′thə-sīt′ ]
An igneous rock consisting almost entirely of plagioclase feldspar, especially the labradorite variety. Anorthosites have been identified among rock samples collected from the Moon.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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