rhizotomy

noun, plural rhi·zot·o·mies. Surgery.

1. the surgical section or cutting of the spinal nerve roots, usually posterior or sensory roots, to eliminate pain.

noun plural -mies

1. surgical incision into the roots of spinal nerves, esp for the relief of pain

n.

1. Surgical severance of spinal nerve roots, as for the relief of pain.radicotomy radiculectomy