English dictionary
fergusonite
/'f/[@]/rg/@/s/@/,n/aI/t/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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a dark mineral consisting of oxides of yttrium and erbium and tantalum and other minerals
Source: WordNet 3.0
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A mineral of a brownish black color, essentially a tantalo- niobate of yttrium, erbium, and cerium; -- so called after Robert <i>Ferguson</i>.
Source: webster1913