单词 | rufi- |
释义 | rufi-comb. form 1. Botany and Zoology. Used to form adjectives describing animals and plants that have reddish parts. ΚΠ 1859 R. G. Mayne Expos. Lexicon Med. Sci. (1860) 1105/1 Having fruit of a ruddy colour, as the Bauhinia ruficarpa: ruficarpous. ΚΠ 1859 R. G. Mayne Expos. Lexicon Med. Sci. (1860) 1105/1 Having a red tail, as the Platyrhynchus ruficaudatus: ruficaudate. ΚΠ 1859 R. G. Mayne Expos. Lexicon Med. Sci. (1860) 1105/2 Having fallow or reddish yellow antennæ, as the Tabanus ruficornis: ruficornate. ΚΠ 1859 R. G. Mayne Expos. Lexicon Med. Sci. (1860) 1105/2 Having a ruddy-coloured belly, as the Sylvia rufigastra: rufigastrate. ΚΠ 1859 R. G. Mayne Expos. Lexicon Med. Sci. (1860) 1105/2 Having a ruddy lip, as the Elater rufilabris: rufilabrate. 2. Chemistry. Used to form names of red compounds. ruficarmin n. Brit. /ˌruːfɪˈkɑːmɪn/ , U.S. /ˌrufəˈkɑrmən/ (also ruficarmine) [ < rufi- comb. form + carmine n. and adj., after German Ruficarmin (C. Liebermann & W. A. van Dorp 1872, in Ann. der Chem. u. Pharm. 163 117)] now rare a red substance obtained by heating carminic acid, said to have the formula C16H12O6.ΚΠ 1872 Jrnl. Chem. Soc. 25 706 This body, which the authors call ruficarmin, is another product of the condensation of carmine-red. 1884 Amer. Naturalist 18 327 I hope later to try some coloring experiments with coccinin, ruficoccin, carmin red, and ruficarmin. 1918 A. G. Perkin & A. E. Everest Nat. Org. Colouring Matters i. 78 Ruficarmine, C16H12O6, can be obtained, according to Liebermann and van Dorp, by heating carminic acid with water. ruficoccin n. Brit. /ˌruːfɪˈkɒksɪn/ , U.S. /ˌrufəˈkɑksən/ [ < rufi- comb. form + coccin n., after German Ruficoccin (C. Liebermann & W. A. van Dorp 1871, in Berichte der Deutsch. Chem. Ges. 4 656)] now rare a red-brown substance obtained by heating carminic acid, said to have the formula C16H10O6.ΚΠ 1871 Jrnl. Chem. Soc. 24 913 This new colouring matter. which the authors call ruficoccin, is very sparingly soluble in cold water. 1892 A. Collin & W. Richardson tr. R. Nietzki Chem. Org. Dye-stuffs xv. 267 Ruficoccin is a brick-red powder, sparingly soluble in water and ether, easily soluble in alcohol. 1919 Color Trade Jrnl. Feb. 40/2 When carminic acid is heated to 390°F with water or with dilute hydrochloric acid,..an insoluble red product known as rufi-carmine or ruficoccin, is formed. rufigallic adj. Brit. /ˌruːfɪˈɡalɪk/ , U.S. /ˌrufəˈɡælɪk/ [apparently < rufi- comb. form + gallic adj.2, after French acide rufigallique (1849 or earlier) or German Rufigallussäure (1855 or earlier)] rufigallic acid n. a weakly acidic red crystalline substance obtained by heating gallic acid with acids.Systematic name: 1,2,3,5,6,7-hexahydroxyanthraquinone; C14H8O8.ΚΠ 1856 W. Gregory Handbk. Org. Chem. (ed. 4) 326 When dissolved in hot oil of vitriol, and precipitated from the cold solution by water, gallic acid is obtained in a peculiar form, called rufigallic acid, which is C14H4O8. 1870 Nature 11 Aug. 308/1 Gallic acid..when heated with sulphuric acid, yields rufigallic acid, until now considered as C7H4O4. 1955 Biochem. Jrnl. 59 479/1 Rufigallic acid and asperthecin decompose very rapidly in strongly alkaline solution. 2004 U.S. Patent 2004/0202930 5/2 Rufigallic acid is prepared according to the method of Robiquet..by condensing gallic acid in the concentrated sulfuric acid. rufimoric adj. Brit. /ˌruːfɪˈmɔːrɪk/ , U.S. /ˌrufəˈmɔrɪk/ [ < rufi- comb. form + moric adj., after German Rufimorinsäure rufimoric acid (R. Wagner 1851, in Jrnl. f. prakt. Chem. 52 462)] now rare rufimoric acid n. a red acidic substance, not identified, obtained by heating morintannic acid (maclurin).ΚΠ 1851 Chem. Gaz. 16 June 266 A brick-red amorphous mass separates, which has the property of yielding a magnificent carmine solution on being mixed with the smallest quantity of ammonia or potash. On account of this property, the author calls this substance rufimoric acid. 1874 W. Crookes Pract. Handbk. Dyeing v. 407 A solution of moritannic acid in sulphuric acid deposits, after having been allowed to stand for some time, a new acid called rufimoric. 1920 J. M. Matthews Applic. Dyestuffs xxi. 492 If the strong acid solution is allowed to stand for some days it deposits brick-red crystals of rufimoric acid. This entry has been updated (OED Third Edition, March 2011; most recently modified version published online March 2022). < comb. form1851 |
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