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]