Definition of alkene noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈælkiːn//
; NAmE NAmE//ˈælkiːn//
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any of a series of gases that contain hydrogen and carbon and that have a double bond (= force of attraction) between two of the carbon atoms Word Originlate 19th cent.: from alkyl (German, from Alkohol ‘alcohol’ + -yl) + -ene.
See the Oxford Advanced American Dictionary entry: alkene