E number
noun [ C ] uk/ˈiː ˌnʌm.bər/ us/ˈiː ˌnʌm.bɚ/
（欧盟国家食品包装上标明所含化学添加剂的）E 数
any of a set of numbers with the letter E in front of them that are used on containers of food in the European Union to show which particular approved chemical has been added to the food