pyroxenite

[pahy-rok-suh-nahyt, puh-]

py·rox·e·nite

[pahy-rok-suh-nahyt, puh-]
noun Petrology.
any rock composed essentially, or in large part, of pyroxene of any kind.

Origin:
1860–65; pyroxene + -ite1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Pyroxenite is always a great word to know.
So is ninnyhammer. Does it mean:
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
a fool or simpleton; ninny.
Collins
World English Dictionary
pyroxenite (paɪˈrɒksɪˌnaɪt)
 
n
a very dark coarse-grained ultrabasic rock consisting entirely of pyroxene minerals

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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