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doc Definition of lutecium
    English to English
    noun
  • a trivalent metallic element of the rare earth group; usually occurs in association with yttrium
  • source: WordNet 3.0
  • A metallic element separated from ytterbium in 1907, by Urbain in Paris and by von Welsbach in Vienna. Symbol, Lu; at. wt. 174.0.
  • source: Webster 1913
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