Olefin

//ˈəʊləfɪn// noun

Definitions

Noun
  1. 1
    Any of a class of unsaturated open-chain hydrocarbons such as ethylene; an alkene with only one carbon-carbon double bond.
  2. 2
    any unsaturated aliphatic hydrocarbon wordnet

Etymology

From olefiant, "oil-producing".

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