• synonyms


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.
Show More

Origin of rhizotomy

First recorded in 1910–15; rhizo- + -tomy
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for rhizotomy


noun plural -mies
  1. surgical incision into the roots of spinal nerves, esp for the relief of pain
Show More
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


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