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lutetium    
n. 镥



lutetium
n 1: a trivalent metallic element of the rare earth group;
usually occurs in association with yttrium [synonym:
{lutetium}, {lutecium}, {Lu}, {atomic number 71}]

Lutetium \Lu*te"ti*um\, n. (Chem.)
A metallic element separated from ytterbium in 1907, by
Urbain in Paris and by von Welsbach in Vienna. It is a member
of the Lanthanide rare earth group. Symbol, Lu; atomic number
71; atomic weight 174.967 [C=12.011]. Previously spelled
{Lutecium}.
[Webster 1913 Suppl. PJC]


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