Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun terbium

1 sense of terbium

Sense 1
terbium, Tb, atomic number 65 -- (a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite)
       => metallic element, metal -- (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)