erbium definition, erbium meaning | English dictionary

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      n   a soft malleable silvery-white element of the lanthanide series of metals: used in special alloys, room-temperature lasers, and as a pigment. Symbol: Er; atomic no.: 68; atomic wt.: 167.26; valency: 3; relative density: 9.006; melting pt.: 1529°C; boiling pt.: 2868°C  
     (C19: from New Latin, from (Ytt)erb(y), Sweden, where it was first found + -ium)  
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