ra·chis·chi·sis /rəˈkɪskəsəs/ 名詞
脊柱裂
rachischisis
n : 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]