olefin

Any of a class of unsaturated open-chain hydrocarbons having at least one double bond.

A fiber or fabric made of this material.

Olefiant gas, or ethylene. See ethylene.

Any one of the series of unsaturated hydrocarbons of which ethylene is the type; a member of the alkene series of hydrocarbons; an alkene.

Any of a class of unsaturated open-chain hydrocarbons such as ethylene; an alkene with only one carbon-carbon double bond.

any unsaturated aliphatic hydrocarbon