Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A glassy, usually yellowish gray variety of orthorhombic pyroxene having a magnesium silicate base, mainly MgSiO3, usually found embedded in igneous rocks and meteorites.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A form of pyroxene consisting solely of magnesium silicate.

from the GNU version of the Collaborative International Dictionary of English

  • n. A mineral of the pyroxene group, orthorhombic in crystallization; often fibrous and massive; color grayish white or greenish. It is a silicate of magnesia with some iron. Bronzite is a ferriferous variety.

from The Century Dictionary and Cyclopedia

  • n. A silicate, chiefly of magnesium, with some iron, belonging to the pyroxene group.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

Greek enstatēs, adversary (because of its refractory quality) : en-, in, at, near; see en-2 + -statēs, one that stands; see stā- in Indo-European roots + -ite1.

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