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English
noun
:
niobite
1.
niobite
(substance)
a black mineral that is an ore of niobium and tantalum
Synonyms
columbite
Broader (hypernym)
mineral
Substance holonym
atomic number 41
,
atomic number 73
,
Nb
,
niobium
,
Ta
,
tantalum
Based on WordNet 3.0 copyright © Princeton University.
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. English edition:
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.
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