Origin of olefinfrom French (gaz) oléfiant from Classical Latin oleum, oil + present participle of French fier, to make from Classical Latin facere: see do
- Any of a class of unsaturated open-chain hydrocarbons having at least one double bond.
- A fiber or fabric made of this material.
Origin of olefinFrench (gaz) oléfiant oil-forming (gas), ethylene Latin oleum oil ; see oil . French -fiant present participle of -fier -fy