Search Result for "rhizotomy": 
Wordnet 3.0

NOUN (1)

1. surgical procedure in which spinal nerve roots are cut; done (anterior roots) to relieve intractable pain or (posterior roots) to stop severe muscle spasms; 



WordNet (r) 3.0 (2006):

rhizotomy
    n 1: surgical procedure in which spinal nerve roots are cut;
         done (anterior roots) to relieve intractable pain or
         (posterior roots) to stop severe muscle spasms