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praseodymium
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English Dictionary: praseodymium by the DICT Development Group
3 results for praseodymium
From WordNet (r) 3.0 (2006) [wn]:
praseodymium
n
  1. a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process
    Synonym(s): praseodymium, Pr, atomic number 59
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Praseodymium \Pra`se*o*dym"i*um\, n. [Praseo- + didymium.]
      (Chem.)
      An elementary substance, one of the constituents of didymium;
      -- so called from the green color of its salts. Symbol Ps.
      Atomic weight 143.6.

From The Elements (22Oct97) [elements]:
   praseodymium
   Symbol: Pr
   Atomic number: 59
   Atomic weight: 140.907
   Soft silvery metallic element, belongs to the lanthanoids. Only natural
   isotope is Pr-141 which is not radioactive.   Fourteen radioactive isotopes
   have been artificially produced. Used in rare-earth alloys. Discovered in
   1885 by C.A. von Welsbach.
  
  
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