anorthosite

[an-awr-thuh-sahyt]

an·or·tho·site

[an-awr-thuh-sahyt]
noun Petrology.
a granular plutonic rock composed largely of labradorite or a more calcic feldspar.

Origin:
1860–65; < French anorthose anorthoclase (an- an-1 + Greek orthós straight) + -ite1

an·or·tho·sit·ic [an-aw-thuh-sit-ik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To anorthosite

00:10

00:09

00:08

00:07

00:06

00:05

00:04

00:03

00:02

00:01

Anorthosite is always a great word to know.
So is ninnyhammer. Does it mean:
a scrap or morsel of food left at a meal.
a fool or simpleton; ninny.
Collins
World English Dictionary
anorthosite (ænˈɔːθəˌsaɪt)
 
n
a coarse-grained plutonic igneous rock consisting almost entirely of plagioclase feldspar
 
[C19: from French anorthose (see an-, ortho-) + -ite1]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
anorthosite   (ān-ôr'thə-sīt')  Pronunciation Key 
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 © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Dictionary.com, LLC. Copyright © 2012. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT