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pitchblende

Noun

pitch=blende

WORDNET DICTIONARY

pitchblende(n = noun.substance) uraninite - 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; Array

is a kind of uranium ore

pitchblende, n. [1st pitch + blende.].

A pitch-black mineral consisting chiefly of the oxide of uranium; uraninite. See Uraninite. [1913 Webster]

pitchblende, n. a mineral form of uranium oxide occurring in pitchlike masses and yielding radium.

Etymology

G Pechblende (as PITCH(2), BLENDE)

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