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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 periclase
 方鎂石

From: Webster's Revised Unabridged Dictionary (1913)

 Per·i·clase Per·i·cla·site n.  Min. A grayish or dark green mineral, consisting essentially of magnesia (magnesium oxide), occurring in granular forms or in isometric crystals.
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From: WordNet (r) 2.0

 periclase
      n : a white solid mineral that occurs naturally as periclase; a
          source of magnesium [syn: magnesia, magnesium oxide]