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ATOMIC NUMBER 73
I. (noun)
Sense 1
Meaning:
A hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
Synonyms:
atomic number 73; Ta; tantalum
Classified under:
Hypernyms ("atomic number 73" is a kind 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.)
Holonyms ("atomic number 73" is a substance of...):
fergusonite (a dark mineral consisting of oxides of yttrium and erbium and tantalum and other minerals)
columbite; niobite (a black mineral that is an ore of niobium and tantalum)
tantalite (a mineral consisting of tantalum oxide of iron and manganese that occurs with niobite or in coarse granite; an ore of tantalum)
