What is "lutecium"

Lutecium \Lu*te"ci*um\, n. (Chem.) same as Lutetium; -- an older spelling.

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.

n. (obsolete form of lutetium English)

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