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3 definitions found

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

 fergusonite
 褐釔鈮礦

From: Webster's Revised Unabridged Dictionary (1913)

 Fer·gu·son·ite n. Min. A mineral of a brownish black color, essentially a tantalo-niobate of yttrium, erbium, and cerium; -- so called after Robert Ferguson.
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From: WordNet (r) 2.0

 fergusonite
      n : a dark mineral consisting of oxides of yttrium and erbium
          and tantalum and other minerals