Definitions for: Pitchblende

[n] 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

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

Synonyms: uraninite

See Also: atomic number 92, mineral, U, uranium, uranium ore