EU's regret over drug

• A bivalent and trivalent metallic element of the rare earth group
• Metallic element, Eu

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
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., 15 965 (C=1 011); valence ...

Wiktionary Word definitions in Wiktionary
n. A metallic chemical element (''symbol'' Eu) with an atomic number of 63.

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
rare earth element, 1901, named by its discoverer, French chemist Eugène Demarçay (1852-1903) in 1896, from Europe + -ium .

WordNet Word definitions in WordNet
n. a bivalent and trivalent metallic element of the rare earth group [syn: Eu , atomic number 63 ]

Wikipedia Word definitions in Wikipedia
Europium is a chemical element with symbol Eu and atomic number 63. It was isolated in 1901 and is named after the continent of Europe . It is a moderately hard, silvery metal which readily oxidizes in air and water . Being a typical member of the lanthanide ...