europium Europeward • Europocentric · · · Info · Definitions · Synonyms · Characters · · europium · · Text Latin · · Script 8 · · Length Definitions · · · (noun) a bivalent and trivalent metallic element of the rare earth group. Synonyms: Eu, atomic number 63. · · Noun Definition 1 Synonyms · · · eu · · Synonym 1 atomic number 63 · · Synonym 2 Characters · · e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 u latin small letter u U+0075