Merzbacher-Pelizaeus disease Merz·bach·er-Pelizaeus disease (mûrts'bāk'ər-, měrts'bäKH'ər-)
n.
A familial degenerative disease of the brain marked by progressive sclerosis of white matter of the frontal lobes, mental deficiency, and vasomotor disorders. Also called , aplasia axialis extracorticalis, hereditary cerebral leukodystrophy, Pelizaeus-Merzbacher disease.