glyceryl glyc·er·yl (glĭs'ər-əl) n. A trivalent radical obtained from glycerol by the removal of hydroxyl groups.
The radical CH2CH(OH)CH2OH, obtained from glycerol by removing one hydroxyl (OH) group.
The radical CH2CHCH2, obtained from glycerol by removing all three hydroxyl (OH) groups. This radical is a component of many natural oils and fats.