oleomargarine (n.)youdaoicibaDictYouDict[oleomargarine 词源字典]
1873, "butter substitute made from beef fat," from French oléomargarine (1854), from oléine (from Latin oleum "oil" + -ine, after glycerine) + margarine. It was regarded as a chemical compound of olein and margarine.[oleomargarine etymology, oleomargarine origin, 英语词源]