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terbiummore about terbium

terbium


  3  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Terbium  \Ter"bi*um\,  n.  [NL.,  fr  Ytterby  in  Sweden.  See 
  {Erbium}.]  (Chem.) 
  A  rare  metallic  element,  of  uncertain  identification, 
  supposed  to  exist  in  certain  minerals,  as  gadolinite  and 
  samarskite,  with  other  rare  ytterbium  earth.  Symbol  Tr  or  Tb 
  Atomic  weight  150. 
 
  From  WordNet  r  1.6  [wn]: 
 
  terbium 
  n  :  a  metallic  element  of  the  rare  earth  group  used  in  lasers; 
  occurs  in  apatite  and  monazite  and  xenotime  and  ytterbite 
  [syn:  {Tb},  {atomic  number  65}] 
 
  From  Elements  database  20001107  [elements]: 
 
  terbium 
  Symbol:  Tb 
  Atomic  number:  65 
  Atomic  weight:  158.924 
  Silvery  metallic  element  belonging  to  the  lanthanoids.  Tb-159  is  the  only 
  stable  isotope,  there  are  seventeen  artificial  isotopes.  Discovered  by 
  G.G.  Mosander  in  1843. 
 
 




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