polyethylenic, a. Chem.
(ˌpɒlɪɛθɪˈliːnɪk)
[ad. F. polyéthylénique (A. Wurtz 1860, in Compt. Rend. L. 1195), f. poly- poly- + éthylène ethylene + -ique -ic.]
† 1. Used to designate polymeric compounds prepared from derivatives of ethylene. Cf. polyethylene a. Obs.
| 1860 A. Wurtz in Chem. News 25 Aug. 121/1 Glycolic, lactic, and oxalic acids..are acids of very simple constitution; but such is not the case with those obtained by oxidising the complex glycols, which I have called polyethylenic alcohols. 1878 C. M. Tidy Handbk. Mod. Chem. xxiii. 574 By heating glycol with ethylenic oxide in sealed tubes, a series of compounds called polyethylenic glycols (or alcohols) are formed. 1895 Jrnl. Chem. Soc. LXVIII. i. 320 Ethylenic oxide and sodium ethoxide..give a product which boils at 110–120°..; this..must therefore be regarded as a complex ethylic polyethylenic oxide. |
2. Polyunsaturated; of the nature of polyunsaturation.
| 1928 Proc. R. Soc. A. CXXII. 564 Two polyethylenic acids.., namely, linoleic acid of soya bean or cotton-seed oil..linolenic acid of linseed oil. 1958 Jrnl. Sci. of Food & Agric. IX. 777 The polyethylenic C20 and C22 acids, so characteristic of the animal glycerophosphatides. 1964 Oceanogr. & Marine Biol. II. 176 The pattern of polyethylenic unsaturation in the fatty acids of marine invertebrates is probably the same as that in fish lipids. 1965 E. F. Jansen in Bonner & Varner Plant Biochem. xxv. 655 The hexahydromatricaria ester is included to illustrate the occurrence of homologous polyethylenic compounds. |