Found 2 items, similar to lutetium.
English → English (WordNet) Definition: lutetium lutetium n : a trivalent metallic element of the rare earth group; usually occurs in association with yttrium [syn: lutecium, Lu, atomic number 71]
English → English (gcide) Definition: Lutetium 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]