1. A congenital defect of the central nervous system in which a sac containing part of the spinal cord and its meninges protrude through a gap in the vertebral column; frequently accompanied by hydrocephalus and mental retardation
   "The baby was born with a myelomeningocele that required immediate surgical intervention"

Type of: birth defect, congenital abnormality, congenital anomaly, congenital defect, congenital disease, congenital disorder

Encyclopedia: Myelomeningocele