A compound that consists of only carbon and hydrogen, that contains at least one carbon-carbon double bond. Alkene names end with -ene. Examples are ethylene (CH2=CH2); 1-propene (CH2=CH2CH3), and 2-o [..]

(n) any unsaturated aliphatic hydrocarbon

Alkenes are hydrocarbons containing at least one carbon-carbon covalent double bond. The simplest alkene is ethylene (CH2= CH2). Alkenes that have been polymerized form the basis of many plastics.

Illustrated Glossary of Organic Chemistry Alkene: A functional group characterized by a carbon-carbon double bond. When the carbon-carbon double bond is fully contained within another functional group [..]

Carbon compound containing carbon and hydrogen incorporating one or more double bonds.

<chemistry> An organic molecule containing carbon and hydrogen atoms in straight or branched chains, where at least one carbon-carbon bond is a double bond. One of three major classes of aliphatic hydrocarbons. (13 Nov 1997)