uraninite

POS

Noun

HYPHEN

u=ran=i=nite

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WORDNET DICTIONARY

Noun uraninite has 1 sense

uraninite(n = noun.substance) pitchblende - 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;

is a kind of uranium ore

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CIDE DICTIONARY

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. [1913 Webster]