terbiumPronunciation: /ˈtəːbɪəm/Definition of terbium noun [mass noun] the chemical element of atomic number 65, a silvery-white metal of the lanthanide series. (Symbol: Tb)Origin: mid 19th century: modern Latin, from Ytterby, the name of a village in Sweden where it was discovered. Compare with erbium and ytterbiumterbium in other Oxford dictionaries Definition of terbium in the US English dictionary
