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doc Definition of pitchblende
    English to English
    noun
  • a mineral consisting of uranium oxide and trace amounts of radium and thorium and polonium and lead and helium; uraninite in massive form is called pitchblende which is the chief uranium ore
  • source: WordNet 3.0
  • A pitch-black mineral consisting chiefly of the oxide of uranium; uraninite. See Uraninite.
  • source: Webster 1913
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