▪ I. ethene Chem.
(ˈɛθiːn)
[f. eth-yl + -ene.]
A fatty hydrocarbon, C2H4, forming the second member of the series CnH2n: known also as ethylene, olefiant gas, or heavy carburetted hydrogen. Also attrib., as in ethene bromide, ethene chloride, ethene iodide, etc.
| 1873 Watts Fownes' Chem. 554 Ethene is formed by the action of nascent hydrogen upon ethine or acetylene. Ibid. 619 Ethene Iodide is a colourless, crystalline, volatile substance, of penetrating odour. Ibid. (1877) II. 56 Ethene..is most easily prepared by heating strong alcohol with three or four times its weight of strong sulphuric acid. |
▪ II. ethene
obs. form of heathen.