'niobite' definitions:
Definition of '
niobite
'
From:
WordNet
noun
A black mineral that is an ore of niobium and tantalum [syn: niobite,
columbite
]
Definition of '
niobite
'
From:
GCIDE
niobite \ni"o*bite\, n. (Min.) Same as
Columbite
. [1913 Webster]
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