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单词 quinovic
释义

quinovicadj.

Brit. /kwᵻˈnəʊvɪk/, U.S. /kwəˈnoʊvɪk/
Forms: 1800s kinovic, 1800s– chinovic, 1800s– quinovic.
Origin: A borrowing from French. Etymon: French kinovique.
Etymology: < French kinovique (in acide kinovique ; P.-J. Pelletier and J.-B. Caventou 1821, in Jrnl. de pharm. 7 113) < kina-nova quinova n. (with elision of the second syllable) + -ique -ic suffix. Compare later quinova n.
Chemistry.
quinovic acid n. (a) †= quinovin n. (obsolete); (b) a bitter, crystalline acid of which glycosides are found in cinchona bark and various other plants.Quinovic acid has a pentacyclic structure. Formula: C30H46O5.
ΚΠ
1830 A. H. Lincoln tr. L. N. Vauquelin Dict. Chem. 61 Acid Kinovic... It is white, light, flosculous [perh. read flocculous], scarcely soluble in water.
1838 T. Thomson Chem. Org. Bodies 805 The kinovic acid of Pelletier and Caventou has considerable analogy with the oily acids.
1868 H. Watts Dict. Chem. V. 31 Quinovic Acid..was originally used as a synonym for quinovin or quinova-bitter, but is now applied..to an acid produced, together with quinova-sugar, by the decomposition of quinovin.
1950 Thorpe's Dict. Appl. Chem. (ed. 4) X. 686/2 Quinovic acid..has been isolated from cinchona bark.
1958 Biogr. Mem. Fellows Royal Soc. 4 344 Still another of the polycyclic compounds studied by Wieland was quinovic acid, found in the mother liquors from the manufacture of quinine.
2001 N. Michalun & M. V. Michalun Milady's Skin Care & Cosmetic Ingredients Dict. (new ed.) ii. 262 Important constituents of tormentil extract include tannin, phytosterols, flavonoids, chinovic acid, tormentoside, and pseudosaponine.
This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).
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adj.1830
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