Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A mineral form of magnesium oxide, MgO, usually occurring in cubic crystals or grains.
from The Century Dictionary.
- noun A rare mineral consisting of magnesia (MgO) with a little iron protoxid.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Min.) A grayish or dark green mineral, consisting essentially of magnesia (magnesium oxide), occurring in granular forms or in isometric crystals.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy A
cubic crystalline form ofmagnesium oxide (MgO)
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a white solid mineral that occurs naturally as periclase; a source of magnesium
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[German Periklas : Greek peri-, intensive pref.; see peri– + Greek klasis, breaking (from its perfect cleavage); see orthoclase.]
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Examples
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Magnesia, the oxide of magnesium (MgO) occurs in nature in the rare mineral periclase (MgO); and hydrated, as brucite (MgH_ {2} O_ {2}).
A Text-book of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer 1886
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