Source : Webster's Revised Unabridged Dictionary (1913)

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.

Source : WordNet®

hexose
     n : a monosaccharide that contains six carbon atoms per molecule