quinotannicadj.

Brit.

/ˌkwɪnə(ʊ)ˈtanɪk/, U.S.

/ˌkwɪnoʊˈtænɪk/

Forms: 1800s– kinotannic, 1800s– quinotannic.

Origin: Formed within English, by compounding; modelled on a Latin lexical item. Etymons: quina n., -o- connective, tannic adj.

Etymology: < quina n. + -o- connective + tannic adj., after scientific Latin quinotannicus (in acidum quinotannicum (1837 or earlier)).

Chemistry. Now rare.

quinotannic acid n. a pale yellow tannin found in cinchona bark.

ΚΠ

1857 W. A. Miller Elements Chem.: Org. 270 In the bark of the different varieties of Cinchona, several..bases occur. They..are found, in combination with kinic and kinotannic [1862 (ed. 2) quinotannic] acids, in the bark.

1868 H. Watts Dict. Chem. V. 30 Quinotannic acid is a light-yellow, friable, very hygroscopic mass, which becomes electric by friction.

1885 Bull. Torrey Bot. Club 12 31 The quinotannic acid in yellow beech leaves changes into the fine orange-brown color which makes those trees so ornamental in autumn.

1930 A. F. Holleman Text-bk. Org. Chem. (ed. 7) 558 These barks contain various acids such as quinic acid, quinovic acid, and quinotannic acid.

This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).

单词	quinotannic
释义	quinotannicadj. Brit. /ˌkwɪnə(ʊ)ˈtanɪk/, U.S. /ˌkwɪnoʊˈtænɪk/ Forms: 1800s– kinotannic, 1800s– quinotannic. Origin: Formed within English, by compounding; modelled on a Latin lexical item. Etymons: quina n., -o- connective, tannic adj. Etymology: < quina n. + -o- connective + tannic adj., after scientific Latin quinotannicus (in acidum quinotannicum (1837 or earlier)). Chemistry. Now rare. quinotannic acid n. a pale yellow tannin found in cinchona bark. ΚΠ 1857 W. A. Miller Elements Chem.: Org. 270 In the bark of the different varieties of Cinchona, several..bases occur. They..are found, in combination with kinic and kinotannic [1862 (ed. 2) quinotannic] acids, in the bark. 1868 H. Watts Dict. Chem. V. 30 Quinotannic acid is a light-yellow, friable, very hygroscopic mass, which becomes electric by friction. 1885 Bull. Torrey Bot. Club 12 31 The quinotannic acid in yellow beech leaves changes into the fine orange-brown color which makes those trees so ornamental in autumn. 1930 A. F. Holleman Text-bk. Org. Chem. (ed. 7) 558 These barks contain various acids such as quinic acid, quinovic acid, and quinotannic acid. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < adj.1857
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