A sirupy variety of sugar, rarely obtained crystallized, occurring widely in honey, ripe fruits, etc., and hence called also fruit sugar; also called fructose. Chemical formula: C6H12O6. It is called levulose, because it rotates the plane of polarization of light to the left, in contrast to dextrose, the other product of the hydrolysis of sucrose.

a simple sugar found in honey and in many ripe fruits

Also called fructose (fruit sugar), a monosaccharide commonly found in honey that is slow to granulate (such as Robinia or locust honey); chemical formula is like glucose, but has it’s carbonyl group in a different place.