A bivalent and trivalent metallic element of the rare earth group

• EU's regret over drug
• Metallic element, Eu

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 .

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 ...

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 ...

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

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