Library / 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:

Nouns denoting substances

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)

Credits