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