单词 | pyrethrine |
释义 | pyrethrinen. Chemistry. ΚΠ 1838 T. Thomson Chem. Org. Bodies 815 To the acrid substance M. Parisel has given the name of pyrethrin. But it appears..that it is not a simple vegetable principle as he supposed, but a compound of two oils and a resin. 2. = pellitorine n. ΚΠ 1877 Jrnl. Chem. Soc. 32 ii. 195 From the Radix Pyrethri..a substance somewhat similar to chavicine was extracted... The author named it pyrethrine. 1895 Jrnl. Chem. Soc. 67 101 We propose provisionally to name it pellitorine. It is very probable that it is the same substance as that isolated..by Buchheim, in 1876, and named by him pyrethrine. 1967 Martindale's Extra Pharmacopoeia (ed. 25) 1544/2 Pyrethrum root..contains a crystalline substance, pellitorine (pyrethrine) which has an intensely pungent taste and produces a sialagogue effect. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < n.1838 |
随便看 |
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。