disaccharide
noun [ C ] chemistry specialized uk/daɪˈsæk.ə.raɪd/ us/daɪˈsæk.ə.raɪd/
二糖（由两个单糖分子组成的糖类）
a sugar that is formed of two single sugar molecules
Sucrose is a disaccharide made of one fructose and one glucose molecule. 蔗糖属于二糖，由一个果糖分子和一个葡萄糖分子组成。