Definify.com
Webster 1913 Edition
Uraninite
U-ran′i-nite
,Noun.
(Min.)
A mineral consisting chiefly of uranium oxide with some lead, thorium, etc., occurring in black octahedrons, also in masses with a pitchlike luster; pitchblende.
Definition 2025
uraninite
uraninite
English
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Uraninite of the variety pitchblende
Noun
uraninite (plural uraninites)
- (mineralogy) Any of several brownish-black forms of uranium dioxide, UO2, (especially pitchblende) that is the chief ore of uranium; it is isomorphous with thorianite.
Translations
form of uranium dioxide
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