'Lutecium' definitions:

Definition of 'lutecium'

(from WordNet)
noun
A trivalent metallic element of the rare earth group; usually occurs in association with yttrium [syn: lutetium, lutecium, Lu, atomic number 71]

Definition of 'Lutecium'

From: GCIDE
  • 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]

Definition of 'Lutecium'

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