glycogen storage disease [Gk, glykys + genein + L, instaurare, to renew, dis, opposite of; Fr, aise, ease] , any of a group of inherited disorders of glycogen metabolism. An enzyme deficiency or defect in glycogen transport causes glycogen to accumulate in abnormally large amounts in various parts of the body. Biopsy and chemical analysis reveal the missing enzyme. Also called glycogenosis.
