columbium

co·lum·bi·um

C0495600 (kə-lŭm′bē-əm)n. Niobium. No longer in scientific use.

[After Columbia.]

columbium

(kəˈlʌmbɪəm) n (Elements & Compounds) the former name of niobium[C19: from New Latin, from Columbia, the United States of America]

ni•o•bi•um

(naɪˈoʊ bi əm)

n. a steel-gray metallic element resembling tantalum in its chemical properties; becomes a superconductor below 9 K; used chiefly in alloy steels. Symbol: Nb; at. no.: 41; at. wt.: 92.906; sp. gr.: 8.4 at 20°C. [1835–45; < New Latin; see Niobe, -ium²]

Thesaurus

Noun

columbium - a former name for niobiumatomic number 41, Nb, niobium - a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium

Translations

Niobколумбий

columbium

(kəlŭm`bēəm), symbol Cb, former name of the chemical element niobiumniobium
, metallic chemical element; symbol Nb; at. no. 41; at. wt. 92.90638; m.p. about 2,468&degC;; b.p. 4,742&degC;; sp. gr. 8.57 at 20&degC;; valence +2, +3, +4, or +5.
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columbium

[kə′ləm·bē·əm] (chemistry) niobium

columbium

co·lum·bi·um

columbium

ni•o•bi•um

columbium

columbium

columbium

columbium

col·um·bi·um (Cb),

columbium

columbium

Words related to columbium

noun a former name for niobium

Related Words