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doc Definition of cobalt
    English to English
    noun
  • a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition
  • source: WordNet 3.0
  • A tough, lustrous, reddish white metal of the iron group, not easily fusible, and somewhat magnetic. Atomic weight 59.1. Symbol Co.
  • source: Webster 1913
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