metallic element,
metal any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
pitchblende,
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
uranium 235 a uranium isotope with mass number 235; capable of sustaining chain reactions
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Wiktionary
Substantiv
uranium -
The element with atomic number 92 and symbol U.
Wikipedia
Uranium is a silvery-white metallic chemical element in the actinide series of the periodic table with atomic number 92. It is assigned the chemical symbol U. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons.
OmegaWiki Dictionary
Ω
uranium A metallic element highly toxic and radioactive; used as nuclear fuel.\nSymbol: U, atomic number: 92.
