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Definition of Atomic number 65
1. Noun. A metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite.
Exact synonyms: Tb, Terbium
Generic synonyms: Metal, Metallic Element
Substance meronyms: Apatite, Gadolinite, Ytterbite, Monazite
Generic synonyms: Metal, Metallic Element
Substance meronyms: Apatite, Gadolinite, Ytterbite, Monazite