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uraniummore about uranium


  3  definitions  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Uranium  \U*ra"ni*um\,  n.  [NL.,  from  Uranus  the  planet.  See 
  {Uranus}.]  (Chem.) 
  An  element  of  the  chromium  group  found  in  certain  rare 
  minerals,  as  pitchblende,  uranite,  etc.,  and  reduced  as  a 
  heavy,  hard,  nickel-white  metal  which  is  quite  permanent.  Its 
  yellow  oxide  is  used  to  impart  to  glass  a  delicate 
  greenish-yellow  tint  which  is  accompanied  by  a  strong 
  fluorescence,  and  its  black  oxide  is  used  as  a  pigment  in 
  porcelain  painting.  Symbol  U.  Atomic  weight  239. 
  From  WordNet  r  1.6  [wn]: 
  n  :  a  heavy  toxic  silvery-white  radioactive  metallic  element; 
  occurs  in  many  isotopes;  used  for  nuclear  fuels  and 
  nuclear  weapons  [syn:  {U},  {atomic  number  92}] 
  From  Elements  database  20001107  [elements]: 
  Symbol:  U 
  Atomic  number:  92 
  Atomic  weight:  (231) 
  White  radioactive  metallic  element  belonging  to  the  actinoids  Three 
  natural  isotopes,  U-238,  U-235  and  U-234.  Uranium-235  is  used  as  the  fuel 
  for  nuclear  reactors  and  weapons.  Discovered  by  Martin  H.  Klaproth  in  1789. 

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