Word Study
niobium
OXFORD DICTIONARY
niobium, n. Chem. a rare grey-blue metallic transition element occurring naturally in several minerals and used in alloys for superconductors.
Usage
Symb.: Nb. Also called COLUMBIUM.
Derivative
niobic adj. niobous adj.
Etymology
Niobe daughter of Tantalus: so called because first found in TANTALITE
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