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catechuic
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catechuic
catechuic, a. (kætɪˈ(t)ʃuːɪk) Of or pertaining to catechu. catechuic acid = catechin.1838 T. Thomson Chem. Org. Bodies 112 Of catechuic acid. 1875 H. Wood Therap. (1879) 29 It contains kino⁓tannic and catechuic acid.
Oxford English Dictionary
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catechin
ˈcatechin Chem. A substance obtained from catechu, etc., after the removal of the tannin; a white powder composed of very small silky needles.1853 Pharm. Jrnl. XIII. 79 He has detected catechine in kino. 1876 Harley Mat. Med. 641 The insoluble portion is a mass of acicular crystals, catechin or cate...
Oxford English Dictionary
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tannin
tannin Chem. (ˈtænɪn) [a. F. tanin, ‘le principe tannant’ (1798 Proust in Ann. de Chimie XXV. 225), f. tan tan n.1 + -in1.] Any member of a group of astringent vegetable substances, the tannins, which possess the property of combining with animal hide and converting it into leather. The first member...
Oxford English Dictionary
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rufo-
rufo- (ˈruːfəʊ) comb. form (on Greek types) of L. rūfus red, in some adjs. denoting colour, with sense ‘rufous’, as rufo-fulvous, rufo-piceous, rufo-testaceous; also rufo-catechuic acid, rubinic acid.1809 Shaw Gen. Zool. VII. ii. 303 The wing-feathers are brown, but rufo-testaceous at their base. 18...
Oxford English Dictionary
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Japonic
Japonic, a. (dʒəˈpɒnɪk) [f. as prec. + -ic.] Of or pertaining to Japan; Japanese. Japonic earth: catechu, terra japonica. japonic acid: C12H10O5, a form of tannic acid obtained from catechu.1673 Ray Journ. Low C., Milan 245 Chinese and Japonic manuscripts. 1710 T. Fuller Pharm. Extemp. 104 Powder'd ...
Oxford English Dictionary
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impure
▪ I. impure, a. (n.) (ɪmˈpjʊə(r)) [ad. L. impūr-us, f. im- (im-2) + pūrus pure. Cf. F. impur, -e (13th c. in Hatz.-Darm.).] A. adj. I. 1. a. Containing some defiling or offensive matter; dirty, unclean.1597 A. M. tr. Guillemeau's Fr. Chirurg. 46 b/1 We then sowe a cleane white Compresse on the impur...
Oxford English Dictionary
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proto-
proto- (prəʊtəʊ) before a vowel or h properly prot- (prəʊt), or with h (prəʊθ), repr. Gr. πρωτο-, combining form of πρῶτος first, which became πρωτ- before a simple, and πρωθ- before an aspirated vowel. In compounds already used in Greek, and many of later formation, the Greek practice (represented ...
Oxford English Dictionary
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pyro-
pyro- (paɪərəʊ, pɪrəʊ) before a vowel or h sometimes pyr- (but more freq. pyro-), repr. Gr. πυρο-, combining form of πῦρ fire, forming the first element in many terms belonging to various arts and sciences. (The second element is properly of Greek, but sometimes of Latin or English origin.) 1. In va...
Oxford English Dictionary
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小蓟的中药化学成分是什么?
带花全草含芸香甙(rutin),原儿茶酸(proto-catechuic acid),绿原酸(chlorogenic acid),咖啡酸(caffeic acid),氯化钾(potassium chloride)[1]。
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