u·ra·ni·nite (y -r  n -n t )n. A complex brownish-black mineral, UO2, forming the chief ore of uranium and containing variable amounts of radium, lead, thorium, and other elements. It is isomorphous with thorianite. [German Uranin (from New Latin  ranium, uranium; see uranium) + -ite.] |
uraninite [jʊˈrænɪˌnaɪt]
n
(Earth Sciences / Minerals) a blackish heavy radioactive mineral consisting of uranium oxide in cubic crystalline form together with radium, lead, helium, etc.: occurs in coarse granite. Formula: UO2
[see uranium, -in, -ite1]
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | 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 atomic number 92, uranium, U - a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons uranium ore - any ore from which uranium can be extracted |
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