meningocelePronunciation: /mɪˈnɪŋgə(ʊ)siːl, -ˈnɪndʒə(ʊ)-/Definition of meningocele noun Medicine a protrusion of the meninges through a gap in the spine due to a congenital defect. meningocele in other Oxford dictionaries Definition of meningocele in the US English dictionary