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单词 quinovatannic
释义

quinovatannicadj.

Brit. /kwᵻˌnəʊvəˈtanɪk/, U.S. /kwəˌnoʊvəˈtænɪk/
Forms: 1800s chinovatannic, 1800s kinovatannic, 1800s quinovatannic.
Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: quinova n., tannic adj.
Etymology: < quinova n. + tannic adj., after German Chinovagerbsäure (H. Hlasiwetz 1851, in Ann. der Chem. u. Pharm. 79 131).
Chemistry. Now rare.
quinovatannic acid n. a tannin found in the bark of the tree Cinchona nova (perhaps cascarilla, genus Ladenbergia).
ΚΠ
1862 H. Watts tr. L. Gmelin Hand-bk. Chem. XV. 346 Kinovatannic acid is resolved..into kinova-red and a substance which behaves..like grape-sugar.
1869 H. Watts Dict. Chem. V. 31 Quinovatannic acid, a tannic acid obtained..from the bark of Chinchona nova or C. surinamensis. It is very much like quinnotannic acid, but differs from the latter in having a some what bitter taste and in not giving a precipitate with gelatin or tartar-emetic.
1918 A. R. Cushny Text-bk. Pharmacol. (ed. 7) ii. xxx. 457 The acids generally acknowledged to be present in cinchona are quinic, quinovic, quinotannic, quinovatannic, caffeotannic and oxalic.
This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).
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adj.1862
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