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alkene Syllabification: al·kene
Pronunciation: /ˈalˌkēn/

Definition of alkene in English:


Any of the series of unsaturated hydrocarbons containing a double bond, including ethylene and propylene.
  • Alkenes have the general formula: CnH2n
Example sentences
  • Epoxidation, the conversion of an olefin (an unsaturated alkene hydrocarbon) to a cyclic ether through reaction with hydrogen peroxide, a peracid, or oxygen, is an important chemical technique.
  • Among the 4800 constituents of tobacco smoke, researchers have identified more than 100 alkanes, 150 alkenes and 55 alicyclic hydrocarbons.
  • The functional group of an alkene is its carbon-carbon double bond.


Late 19th century: from alkyl + -ene.

Definition of alkene in:
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