VariousWords beta
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Definitions:
Noun
terbium
Tb
atomic number 65
Definition: a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite
Definition: A metallic chemical element (symbol Tb) with an atomic number of 65: a soft, silvery-white, rare earth metal that is malleable and ductile.