a sugar (like sucrose or fructose) that does not hydrolyse to give other sugars; the simplest group of carbohydrates

a monosaccharide having six carbon atoms and a ketone group

a monosaccharide with the chemical formula C5H10O5.]

a monosaccharide containing five carbon atoms, and including a ketone functional group.

A monosaccharide that has both a ketone and four carbons.

Any ketose having three carbon atoms; in reality, only dihydroxyacetone.