Dictionary
rhi•zot•o•my
Pronunciation: (rī-zot'u-mē), [key]—
n.,
—pl. -mies.
Surg.
the surgical section or cutting of the spinal nerve roots, usually posterior or sensory roots, to eliminate pain.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.