Disaccharide
Wikipedia.org
A disaccharide or biose[1] is the carbohydrate formed when two monosaccharides undergo a condensation reaction which involves the elimination of a small molecule, such READ MORE http://en.wikipedia.org/wiki/Disaccharide
Disaccharides are one of the chemical groupings of carbohydrates. Sugars that have two molecules are called disaccharides. Sucrose and lactose are two disaccharides.