dorsal root


Definition of dorsal root

: the one of the two roots of a spinal nerve that passes dorsally to the spinal cord and consists of sensory fibers

Examples of dorsal root in a Sentence

Recent Examples on the Web

Another minimally invasive procedure that has shown some benefit for chronic knee pain after surgery is the use of dorsal root ganglion, or DRG, stimulation. Markus Bendel,, "Although uncommon, some people have pain even after knee replacement surgery," 14 Aug. 2019 With genital herpes, both HSV-1 and HSV-2 hunker down next to your spine in the dorsal root ganglia. Becky Little, Smithsonian, "Can We Gene-Edit Herpes Away?," 23 Mar. 2018

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

First Known Use of dorsal root

1922, in the meaning defined above

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19 Aug 2019

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The first known use of dorsal root was in 1922

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dorsal root


Medical Definition of dorsal root

: the one of the two roots of a spinal nerve that passes posteriorly to the spinal cord separating the posterior and lateral funiculi and that consists of sensory fibers

called also posterior root

— compare ventral root

More from Merriam-Webster on dorsal root

Rhyming Dictionary: Words that rhyme with dorsal root Encyclopedia article about dorsal root

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