The Collaborative International Dictionary of English v.0.48:
Scoliosis \Sco`li*o"sis\, n. [NL., fr. Gr. skolio`s crooked.] (Med.) A lateral curvature of the spine. [1913 Webster]WordNet (r) 3.0 (2006):
scoliosis n 1: an abnormal lateral curve to the vertebral column