niobicadj.

Brit.

/nʌɪˈəʊbɪk/, U.S.

/naɪˈoʊbɪk/

Origin: Formed within English, by derivation. Etymons: niobium n., -ic suffix.

Etymology: < niob- (in niobium n.) + -ic suffix.In niobic acid after German Niobsäure (H. Rose 1844, in Ann. der Physik u. Chem. 63 335); compare French acide nobique (1844 in a translation of Rose; compare quot. 1845).

Chemistry.

Of, relating to, or derived from niobium; esp. in niobic acid n. a weakly acidic hydrated compound precipitated from a solution of a niobate. Cf. niobous adj.

ΘΚΠ

the world > matter > chemistry > elements and compounds > metals > specific elements > niobium > [adjective]

niobic1845

pelopic1848

1845 H. Rose in Chem. Gaz. 3 36 I have called it Niobium, and its acid niobic acid.

1848 G. Fownes Man. Elem. Chem. (ed. 2) 310 The American tantalite contains niobic, pelopic, and tungstic acids.

1866 H. Watts Dict. Chem. IV. 49 It is remarkable..that niobic oxide cannot be formed from niobous oxide by direct oxidation.

1922 H. J. H. Fenton Notes Qualitative Anal. (new ed.) 155 The molybdic and tantalic acids dissolve in excess of HCl, whereas thallous chloride, niobic and tungstic acids are insoluble or soluble with difficulty.

1950 N. V. Sidgwick Chem. Elements I When niobic acid is treated with hydrogen peroxide it has one or more of its oxygen atoms replaced by O₂ groups.

1988 F. A. Cotton & G. Wilkinson Adv. Inorg. Chem. (ed. 5) xix. 787 They [sc. Nb₂O₅ and Ta₂O₅] are obtained by roasting the hydrous oxides (so-called niobic and tantalic acids) or other compounds in excess oxygen.

This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022).

单词	niobic
释义	niobicadj. Brit. /nʌɪˈəʊbɪk/, U.S. /naɪˈoʊbɪk/ Origin: Formed within English, by derivation. Etymons: niobium n., -ic suffix. Etymology: < niob- (in niobium n.) + -ic suffix.In niobic acid after German Niobsäure (H. Rose 1844, in Ann. der Physik u. Chem. 63 335); compare French acide nobique (1844 in a translation of Rose; compare quot. 1845). Chemistry. Of, relating to, or derived from niobium; esp. in niobic acid n. a weakly acidic hydrated compound precipitated from a solution of a niobate. Cf. niobous adj. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > niobium > [adjective] niobic1845 pelopic1848 1845 H. Rose in Chem. Gaz. 3 36 I have called it Niobium, and its acid niobic acid. 1848 G. Fownes Man. Elem. Chem. (ed. 2) 310 The American tantalite contains niobic, pelopic, and tungstic acids. 1866 H. Watts Dict. Chem. IV. 49 It is remarkable..that niobic oxide cannot be formed from niobous oxide by direct oxidation. 1922 H. J. H. Fenton Notes Qualitative Anal. (new ed.) 155 The molybdic and tantalic acids dissolve in excess of HCl, whereas thallous chloride, niobic and tungstic acids are insoluble or soluble with difficulty. 1950 N. V. Sidgwick Chem. Elements I When niobic acid is treated with hydrogen peroxide it has one or more of its oxygen atoms replaced by O₂ groups. 1988 F. A. Cotton & G. Wilkinson Adv. Inorg. Chem. (ed. 5) xix. 787 They [sc. Nb₂O₅ and Ta₂O₅] are obtained by roasting the hydrous oxides (so-called niobic and tantalic acids) or other compounds in excess oxygen. This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022). < adj.1845
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