from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of a group of crystalline silicate minerals common in igneous and metamorphic rocks and containing two metallic oxides, as of magnesium, iron, calcium, sodium, or aluminum.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of a group of crystalline minerals containing silicates of iron, magnesium and calcium.
from the GNU version of the Collaborative International Dictionary of English
- n. A common mineral occurring in monoclinic crystals, with a prismatic angle of nearly 90°, and also in massive forms which are often laminated. It varies in color from white to dark green and black, and includes many varieties differing in color and composition, as diopside, malacolite, salite, coccolite, augite, etc. They are all silicates of lime and magnesia with sometimes alumina and iron. Pyroxene is an essential constituent of many rocks, especially basic igneous rocks, as basalt, gabbro, etc.
from The Century Dictionary and Cyclopedia
- n. An important mineral species, embracing many varieties differing in appearance and chemical composition.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any of a group of crystalline silicate mineral common in igneous and metamorphic rocks
French pyroxène : Greek puro-, pyro- + Greek xenos, stranger (originally viewed as a foreign substance when found in igneous rocks); see ghos-ti- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From French pyroxène, from pyro- + Ancient Greek ξένος ("stranger"). (Wiktionary)