Found 2 items, similar to europium.
English → English (WordNet) Definition: europium europium n : a bivalent and trivalent metallic element of the rare earth group [syn: Eu, atomic number 63]
English → English (gcide) Definition: Europium Europium \Eu*ro"pi*um\, n. [NL.; Europe + -ium, as in aluminium.] (Chem.) A metallic element of the rare-earth group (Lanthanide series), discovered spectroscopically by Demarcay in 1896. Symbol, Eu; atomic number 63; at. wt., 151.965 (C=12.011); valence = +2 or +3. [Webster 1913 Suppl. +PJC]