α. 1800s–1900s ethine.
β. 1900s– ethyne.
ethynen.
/ˈɛθʌɪn/, /ˈiːθʌɪn/, U.S. /ˈɛˌθaɪn/ Chemistry.
The gaseous alkyne acetylene. Cf. acetylene n. 1.
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the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > alkynes > straight-chained, by number of carbon atoms > two
klumene1853
ethyne1855
acetylene1860
1855 W. Odling tr. A. Laurent Chem. Method v. ii. 361 Ethol C2H6O+H3N—H2O would give rise to ethine [Fr. éthine].
1873 H. Watts Fownes's Man. Elem. Chem. (ed. 11) 559 When an electric arc..passes between carbon poles in an atmosphere of hydrogen, the carbon and hydrogen unite in the proportion to form ethine.
1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) i. 55 Acetylene (ethine)..was first obtained impure by E. Davy from calcium carbide in 1839.
1926 Industr. & Engin. Chem. 18 320/2 For the acetylene series the ending -yne is proposed as a substitute for -ine... Thus we have ethyne, propyne, butyne, butadiyne, etc.
1981 J. W. Buttle et al. Chem. (ed. 4) xix. 418 Water reacts with this product to yield ethyne (acetylene)..which can be used as a fuel..or converted into other valuable hydrocarbons.
2006 J. M. Hornback Org. Chem. (Internat. Student ed.) iv. 121 As petroleum supplies dwindle in the future, ethyne prepared from coal via calcium carbide will become more economically attractive.
This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022).
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n.1855