Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of pitchblende is as below...

Uraninite :: Uraninite (n.) A mineral consisting chiefly of uranium oxide with some lead, thorium, etc., occurring in black octahedrons, also in masses with a pitchlike luster; pitchblende..

Pitch-ore :: Pitch-ore (n.) Pitchblende.

Pitchblende :: Pitchblende (n.) A pitch-black mineral consisting chiefly of the oxide of uranium; uraninite. See Uraninite.

Uranium :: Uranium (n.) An element of the chromium group, found in certain rare minerals, as pitchblende, uranite, etc., and reduced as a heavy, hard, nickel-white metal which is quite permanent. Its yellow oxide is used to impart to glass a delicate greenish-yellow tint which is accompanied by a strong fluorescence, and its black oxide is used as a pigment in porcelain painting. Symbol U. Atomic weight 239..

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