any of a very common group of minerals of many varieties, silicates of magnesium, iron, calcium, and other elements, occurring as important constituents of many kinds of rocks, especially basic igneous rocks.
- py·rox·en·ic [pahy-rok-sen-ik], /ˌpaɪ rɒkˈsɛn ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use pyroxene in a sentence
When we first looked at Kamo’oalewa we detected a mineral called pyroxene…that is very similar to what we seen on the Moon.This bitty near-Earth asteroid might be a piece of the moon | Hannah Seo | November 12, 2021 | Popular-Science
Hypersthene is not the prevailing pyroxene, and olivine is usually present, often in such abundance as to make the rock a basalt.Mount Rainier | Various
Rougemonite consists largely of anorthite with pyroxene as the only important ferro-magnesian constituent.Montreal 1535-1914 under the French Rgime | William Henry Atherton
The third is less easily recognized as pyroxene, another of the many minerals containing iron.
The pyroxene in particular is very much changed, and quickly crumbles away in the hand.
pyroxene is most abundantly represented as crystals in many kinds of igneous and metamorphic rocks.Geology | William J. Miller
British Dictionary definitions for pyroxene
any of a group of silicate minerals having the general formula ABSi 2 O 6, where A is usually calcium, sodium, magnesium, or iron, and B is usually magnesium, iron, chromium, manganese, or aluminium. Pyroxenes occur in basic igneous rocks and some metamorphic rocks, and have colours ranging from white to dark green or black. They may be monoclinic (clinopyroxenes) or orthorhombic (orthopyroxenes) in crystal structure. Examples are augite (the most important pyroxene), diopside, enstatite, hypersthene, and jadeite
- pyroxenic (ˌpaɪrɒkˈsɛnɪk), adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for pyroxene
Any of a series of dark silicate minerals having the general chemical formula ABSi2O6, where A is either calcium (Ca), sodium (Na), magnesium (Mg), or iron (Fe), and B is either magnesium, iron, chromium (Cr), manganese (Mn), or aluminum (Al). Pyroxenes vary in color from white to dark green or black and are characterized by a rectangular-shaped cross section. They can be either monoclinic or orthorhombic and occur in igneous and metamorphic rocks. The minerals enstatite, diopside, and augite are pyroxenes.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.