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Disaccharide

(Science: biochemistry) a sugar such as sucrose, which is made up of two monosaccharides: one glucose molecule and one fructose molecule. Two common disaccharides are sucrose and lactose. Any of a variety of carbohydrates that yield two monosaccharide molecules on complete hydrolysis.Complex sugars created by the fusion of two monosaccharides (simpler sugars).