glycoside metabolic process glycoside biosynthetic process O-glycoside biosynthesis O-glycoside formation glycoside biosynthesis GO:0016138 O-glycoside biosynthetic process O-glycoside synthesis glycoside anabolism GO:0016141 glycoside formation glycoside synthesis biological_process The chemical reactions and pathways resulting in the formation of glycosides, compounds in which a glycosyl group is substituted into a hydroxyl, thiol or selenol group in another compound. O-glycoside anabolism glycosyl compound biosynthetic process