gadolinium gadolinite • gadroon · · · Info · Definitions · Synonyms · Characters · · gadolinium · · Text Latin · · Script 10 · · Length Definitions · · · (noun) a ductile silvery-white ductile ferromagnetic trivalent metallic element of the rare earth group. Synonyms: Gd, atomic number 64. · · Noun Definition 1 Synonyms · · · gd · · Synonym 1 atomic number 64 · · Synonym 2 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 g latin small letter g U+0067 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F u latin small letter u U+0075