| 单词 | compound ether |
| 释义 | > as lemmascompound ether k. Chemistry, as compound ether: = ester n. ΘΚΠ the world > matter > chemistry > organic chemistry > esters > [noun] compound ether1818 ester1852 ethereal salt1876 1818 London Med. & Physical Jrnl. 39 17 I ordered a draught, with three drachms of sulphat of magnesia, ten grains of jalap, half a dram of compound æther, and one ounce of infusion of senna. 1852 Rep. Brit. Assoc. 1851 i. 130 If the term, compound ether, be retained at all, it should be restricted to bodies like those produced by Williamson, in which a simple ether is united with an ether radical, as the oxide of ethyl with methyl or with amyl. 1877 H. Watts Fownes's Man. Elem. Chem. II. 110 In the polyatomic alcohols, two hydroxyl groups may also be replaced by one atom of oxygen, giving rise to another class of oxygen ethers. The replacement of the hydrogen of the hydroxyl in an alcohol by acid radicles produces ethereal salts or compound ethers. 1897 T. C. Allbutt et al. Syst. Med. II. 843 The bouquet and aroma [of wine] are due to the compound ethers, especially to œnanthic ether. 1922 G. W. Askinson Perfumes & Cosmetics (ed. 5) iv. 55 Wintergreen..has a very pleasant odor due to an essential oil and a compound ether which can also be produced artificially. < as lemmas |
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