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terbium

DEFINITIONS OF: terbium

1

n a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite

Synonyms:
Tb, atomic number 65
Type of:
metal, metallic element
any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
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