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Search Result for "augite": 
Wordnet 3.0

NOUN (1)

1. dark-green to black glassy mineral of the pyroxene group containing large amounts of aluminum and iron and magnesium;

The Collaborative International Dictionary of English v.0.48:

Augite \Au"gite\ ([add]"j[imac]t), n. [L. augites, Gr. a'ygi`ths, fr. a'ygh` brightness: cf. F. augite.] A variety of pyroxene, usually of a black or dark green color, occurring in igneous rocks, such as basalt; -- also used instead of the general term pyroxene. [1913 Webster]