A disaccharide is a sugar (a carbohydrate) composed of two monosaccharides. Some disaccharides include sucrose, lactose, and maltose.
The English word 'oligosaccharide' means any of the carbohydrates that yield only a few monosaccharide molecules on complete hydrolysis
Maltose is a disaccharide.
Oligo from Greek meaning few and saccharide meaning sugar... Oligosaccharides are carbohydrates mostly found in vegetables
The primary function of disaccharides is as a nutritional source of monosaccharides. Many of the sugars found in foodstuffs are disaccharides.