uraninite [yoo rā′nə nīt΄, yo͞oran′ənīt΄]
[< URANIUM + -IN1 + -ITE1]
a hard, very heavy, dark-colored, radioactive mineral, UO2, the chief ore of uranium; uranium oxide: cf. PITCHBLENDE

English World dictionary. . 2014.

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  • URANINITE — L’uraninite est le principal minerai d’uranium et de radium et doit son nom au premier de ces métaux. C’est un dioxyde d’uranium, mais, dans la nature, celui ci est plus ou moins oxydé, et, de ce fait, sa composition varie entre deux pôles: UO2… …   Encyclopédie Universelle

  • Uraninite — U*ran i*nite, n. (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. [1913 Webster] …   The Collaborative International Dictionary of English

  • uraninite — /yoo ran euh nuyt , ray neuh /, n. a mineral, probably originally uranium dioxide, UO2, but altered by radioactive decay, and usually containing uranium trioxide, lead, radium, and helium, occurring in several varieties, including pitchblende:… …   Universalium

  • Uraninite — Pitchblende redirects here. For other uses, see Pitchblende (disambiguation). Uraninite Pitchblende form Niederschlema Alberoda deposit, Germany General …   Wikipedia

  • uraninite — noun Etymology: German Uranin uraninite (from New Latin uranium) + English ite Date: 1879 a a black octahedral mineral that consists of an oxide of uranium which usually contains thorium, lead, and rare earth elements and is the chief ore of… …   New Collegiate Dictionary

  • uraninite — uraninitas statusas T sritis chemija apibrėžtis UO₂ ir UO₃ mišinys, oksidų klasės mineralas. atitikmenys: angl. uraninite rus. уранинит …   Chemijos terminų aiškinamasis žodynas

  • uraninite — noun 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 • Syn: ↑pitchblende • Hypernyms: ↑uranium ore •… …   Useful english dictionary

  • Uraninite — Pechblende Pechblende Catégorie III : oxydes et hydroxydes Général …   Wikipédia en Français

  • uraninite — noun Any of several brownish black forms of uranium dioxide, UO, (especially pitchblende) that is the chief ore of uranium; it is isomorphous with thorianite …   Wiktionary

  • uraninite — SYN: pitchblende. * * * ura·ni·nite yu̇ rā nə .nīt n a mineral that is basically a black octahedral or cubic oxide of uranium containing lead, thorium, and rare earth elements and that is the chief ore of uranium …   Medical dictionary

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