uranium
ura·ni·um
noun, often attributive \yu̇-ˈrā-nē-əm\Definition of URANIUM
: a silvery heavy radioactive polyvalent metallic element that is found especially in uraninite and exists naturally as a mixture of mostly nonfissionable isotopes — see element table
Origin of URANIUM
New Latin, from Uranus
First Known Use: circa 1797
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