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

From WordNet (r) 2.0 [wn]:

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 [syn: {uraninite}]

pitchblende

Dot Coms with the word pitchblende in them As of 12/11/08

PITCHBLENDE
PITCHBLENDEDBEATS
PITCHBLENDEKEYS
PITCHBLENDEPRODUCTIONS
PITCHBLENDER