noun, plural rhi·zot·o·mies. Surgery.

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

Origin of rhizotomy

First recorded in 1910–15; rhizo- + -tomy
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British Dictionary definitions for rhizotomy


noun plural -mies

surgical incision into the roots of spinal nerves, esp for the relief of pain
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

rhizotomy in Medicine




Surgical severance of spinal nerve roots, as for the relief of pain.radicotomy radiculectomy
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.