Definition of terbium in English:

terbium

(also Tb)

noun

mass noun
  • The chemical element of atomic number 65, a silvery-white metal of the lanthanide series.

    ‘Green light is also emitted from some lanthanide elements: lanthanum, cerium, and terbium.’

Origin

Mid 19th century modern Latin, from Ytterby, the name of a village in Sweden where it was discovered. Compare with erbium and ytterbium.

Pronunciation

terbium

/ˈtəːbɪəm/