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Definition of Atomic number 73
1. Noun. A hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite.
Exact synonyms: Ta, Tantalum
Generic synonyms: Metal, Metallic Element
Substance meronyms: Fergusonite, Columbite, Niobite, Tantalite
Generic synonyms: Metal, Metallic Element
Substance meronyms: Fergusonite, Columbite, Niobite, Tantalite