1. A heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons
   "Uranium-235 is the isotope commonly used in nuclear reactors"; "Uranium, atomic number 92, is the primary fuel used in nuclear power plants";
   - U, atomic number 92

Derived forms: uraniums

Type of: metal, metallic element

Part of: pitchblende, uraninite

Encyclopedia: Uranium