单词 | phytochemical |
释义 | phytochemicaladj.n. A. adj. Of or relating to the chemistry of plants and plant products. ΘΚΠ the world > plants > botany > [adjective] > specific branches or aspects phytognomical1653 phytogeographic1857 phytochemical1858 phytogeographical1859 geobotanical1880 palaeobotanical1883 palaeophytological1885 phytobiological1887 phytopathological1887 geobotanic1888 palaeobotanic1889 floristic1898 phytosociological1922 1858 R. G. Mayne Expos. Lexicon Med. Sci. (1868) 959/1 Phytochemicus,..phytochemical. 1877 Chem. News 4 May 185/1 (heading) On phyto-chemical processes. 1921 Exper. Station Rec. (U.S. Dept. Agric.) 43 820 (heading) Phytochemical investigations on indigenous and naturalized plants. 1948 W. W. Pigman & R. M. Goepp Chem. Carbohydrates 187 Many phytochemical names such as salicin and helicin are in use for natural glycosides although chemical names are usually to be preferred since they indicate the structure. 1992 Chem. in Brit. (BNC) 28 141 Carbenoxolone was developed as a result of a phytochemical investigation of the roots and rhizomes of liquorice. B. n. Any of various types of biologically active compound found in plants. ΘΚΠ the world > matter > chemistry > organic chemistry > [noun] > organic compounds organic1840 phytochemical1966 1966 Indian Jrnl. Exper. Bot. 4 216 (heading) Effect of psychotropic phytochemicals on cerebral amino acid level in mice. 1971 Ecol. Monogr. 41 48 Phytotoxins..and other phytochemicals alter the soil environment adversely. 1986 Oecologia 70 13 Even adapted insects incur a metabolic cost in the processing of their host's phytochemicals. 2002 Time 21 Jan. 77/3 Spinach contains two phytochemicals, lutein and zeaxanthin, that seem to ward off macular degeneration, a leading cause of blindness. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022). < adj.n.1858 |
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