al·kene 
(ălkēn′)
(ălkēn′)n.
Any of a series of unsaturated, aliphatic hydrocarbons with a carbon-carbon double bond, having the general formula CnH2n.
[ALK(YL) + -ENE.]
- conservatism
- conservative
- Conservative Judaism
- conservatively
- conservativeness
- conservator
- conservatorial
- conservatorship
- conservatory
- conserve
- conserver
- consider
- considerable
- considerably
- considerate
- considerately
- considerateness
- consideration
- considered
- considerer
- considering
- consigliere
- consign
- consignable
- consignation