Definition of "olefine" [olefine]

• Olefiant gas, or ethylene (noun)
• Any of the series of unsaturated hydrocarbons of which ethylene is a type (noun)

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• "In elimination, two groups on adjacent carbon atoms are lost and an olefine (alkene) is formed."
• "There are three kinds of petroleum in use, namely those yielding on distillation: 1st, paraffin; 2nd, asphalt; 3rd, olefine."
• "For this reason a larger quantity of KOH is necessary for a given reaction (formation of olefine from alkyl bromide) than in case of the iodine compound."