rhi·​zot·​o·​my | \ rī-ˈzä-tə-mē How to pronounce rhizotomy (audio) \
plural rhizotomies

Definition of rhizotomy

: the operation of cutting the anterior or posterior spinal nerve roots

Examples of rhizotomy in a Sentence

Recent Examples on the Web People with spasticity in their legs may benefit from selective dorsal rhizotomy, which is a surgery that involves disconnecting nerve fibers in the spinal cord5. Lauren Sieben, SELF, 22 Mar. 2022 There are risks associated with selective dorsal rhizotomy, most commonly ongoing numbness in the legs after the operation, but the benefits may outweigh the risks for many people. Lauren Sieben, SELF, 22 Mar. 2022 Historically, selective dorsal rhizotomy has been performed on children. Lauren Sieben, SELF, 22 Mar. 2022 In May, her family traveled to Missouri where Maya underwent selective dorsal rhizotomy surgery with Dr. T.S. Park, one of the nation’s leading pediatric neurosurgeons and a pioneer of the surgery, according to the family's website. Deasia Paige, Detroit Free Press, 6 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rhizotomy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of rhizotomy

1910, in the meaning defined above

History and Etymology for rhizotomy

International Scientific Vocabulary

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Time Traveler for rhizotomy

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The first known use of rhizotomy was in 1910

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Last Updated

25 May 2022

Cite this Entry

“Rhizotomy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rhizotomy. Accessed 1 Jul. 2022.

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More Definitions for rhizotomy


rhi·​zot·​o·​my | \ rī-ˈzät-ə-mē How to pronounce rhizotomy (audio) \
plural rhizotomies

Medical Definition of rhizotomy

: the operation of cutting the anterior or posterior spinal nerve roots


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