noun
a not uncommon congenital defect in which a vertebra is malformed; unless several vertebrae are affected or there is myelomeningocele there are few symptoms; can be diagnosed by amniocentesis
• Syn: ↑spina bifida, ↑schistorrhachis
• Hypernyms: ↑birth defect, ↑congenital anomaly, ↑congenital defect, ↑congenital disorder, ↑congenital abnormality
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rachischisis /ra-kisˈki-sis/ noun
(Gr schisis cleavage) a severe form of spina bifida
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Main Entry: ↑rachis
Useful english dictionary. 2012.