praseodymium definition, praseodymium meaning | English dictionary

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praseodymium

  

      n   a malleable ductile silvery-white element of the lanthanide series of metals. It occurs principally in monazite and bastnaesite and is used with other rare earths in carbon-arc lights and as a pigment in glass. Symbol: Pr; atomic no.: 59; atomic wt.: 140.90765; valency: 3; relative density: 6.773; melting pt.: 931°C; boiling pt.: 3520°C  
     (C20: New Latin, from Greek prasios of a leek-green colour + didymium)  
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