NIOBIUM

niobium, Nb, atomic number

(noun) a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium

Source: WordNet® 3.1

Etymology

Noun

niobium (countable and uncountable, plural niobiums)

A chemical element (symbol Nb) with an atomic number of 41: a light grey, crystalline, ductile transition metal used in superconducting materials.

(countable) A single atom of this element.

Synonyms

• columbium (in metallurgy; not in scientific use)

• dianium (obsolete)

Source: Wiktionary

Ni*o"bi*um, n. Etym: [NL., fr. L. & E. Niobe.] (Chem.)

Definition: A later name of columbium. See Columbium.

Source: Webster’s Unabridged Dictionary 1913 Edition

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