Definitions for "Monosaccharide"
A simple sugar; any of a number of sugars (including the trioses, tetroses, pentoses, hexoses, etc.), not decomposable into simpler sugars by hydrolysis. Specif., as used by some, a hexose. The monosaccharides are all open-chain compounds containing hydroxyl groups and either an aldehyde group or a ketone group.
A monosaccharide or sugar is a carbohydrate that can not be broken down (hydrolized) into smaller sugars. Monosaccharides have between 3 and 7 carbon atoms.
A simple sugar. Oligosaccharides and polysaccharides are made up of monosaccharides.