from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An igneous rock consisting chiefly of pyroxenes.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A heavy, dark igneous rock consisting mostly of pyroxene minerals with smaller amounts of olivine and hornblende.
from the GNU version of the Collaborative International Dictionary of English
- n. A rock consisting essentially of pyroxene.
from The Century Dictionary and Cyclopedia
- n. In petrography, a phaneric rock composed almost wholly of pyroxene of any kind.
Sorry, no etymologies found.