The Collaborative International Dictionary of English v.0.48:
Hexose \Hex"ose\, n. [Hexa- + -ose.] (Chem.) Any member of a group of sugars containing six carbon atoms in the molecule. Some are widely distributed in nature, esp. in ripe fruits. [Webster 1913 Suppl.]WordNet (r) 3.0 (2006):
hexose n 1: a monosaccharide that contains six carbon atoms per molecule