lutecium

from WordNet (r) 3.0 (2006)

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

from The Collaborative International Dictionary of English v.0.48

Lutecium \Lu*te"ci*um\, n. (Chem.)
   same as {Lutetium}; -- an older spelling.
   [Webster 1913 Suppl. +PJC]

from The Collaborative International Dictionary of English v.0.48

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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