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3 definitions found

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

 bi·o·tite /ˈbaɪəˌtaɪt/
 黑雲母

From: Webster's Revised Unabridged Dictionary (1913)

 Bi·o·tite n.  Min. Mica containing iron and magnesia, generally of a black or dark green color; -- a common constituent of crystalline rocks. See Mica.
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From: WordNet (r) 2.0

 biotite
      n : dark brown to black mica found in igneous and metamorphic
          rock