pitchblende

2 definitions found

pitchblende - Collaborative International Dictionary of English v.0.48 :

  Pitchblende \Pitch"blende`\, n. [1st pitch + blende.] (Min.)
     A pitch-black mineral consisting chiefly of the oxide of
     uranium; uraninite. See Uraninite.
     [1913 Webster]

pitchblende - WordNet (r) 2.1 (2005) :

  pitchblende
      n 1: 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 [syn: uraninite, pitchblende]