| / English Dictionary |
COLUMBITE
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
A black mineral that is an ore of niobium and tantalum
Synonyms:
columbite; niobite
Classified under:
Hypernyms ("columbite" is a kind of...):
mineral (solid homogeneous inorganic substances occurring in nature having a definite chemical composition)
Meronyms (substance of "columbite"):
atomic number 41; Nb; niobium (a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium)
atomic number 73; Ta; tantalum (a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite)
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