Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. A mineral form of magnesium oxide, MgO, usually occurring in cubic crystals or grains.
Century Dictionary and Cyclopedia
- n. A rare mineral consisting of magnesia (MgO) with a little iron protoxid. It occurs in minute greenish octahedrons embedded in ejected masses of crystalline limestone at Vesuvius, and has also been found recently in Sweden.
Wiktionary
- n. mineralogy A cubic crystalline form of magnesium oxide (MgO)
GNU Webster's 1913
- n. (Min.) A grayish or dark green mineral, consisting essentially of magnesia (magnesium oxide), occurring in granular forms or in isometric crystals.
WordNet 3.0
- n. a white solid mineral that occurs naturally as periclase; a source of magnesium
Etymologies
- German Periklas : Greek peri-, intensive pref.; see peri- + Greek klasis, breaking (from its perfect cleavage); see orthoclase. (American Heritage® Dictionary of the English Language, Fourth Edition)
Examples
“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.
Lists
These user-created lists contain the word ‘periclase’.
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cutting words
sarcasm, sarx, sarcoptic, syssarcosis, shrew, shrewd, screed, scred, shroud, scroll, scrod, scrutiny and 326 more...
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Words of the Day
glabella, chirotony, nook-shotten, crapehanger, filemot, swirlie, egosurf, lexiphanicism, Ruritanian, stichometry, chrononaut, faldstool and 2253 more...
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