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 Nociceptors—and other sensory neurons—live in discreetclusters, found just outside the spinal cord, called dorsal root ganglia (DRG). Stephani Sutherland, Scientific American, 22 Oct. 2020

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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Time Traveler for dorsal root

Time Traveler

The first known use of dorsal root was in 1922

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Dictionary Entries Near dorsal root

dorsal pore

dorsal root

dorsal suture

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Cite this Entry

“Dorsal root.” Dictionary, Merriam-Webster, Accessed 27 Jan. 2022.

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More Definitions for dorsal root

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 Encyclopedia article about dorsal root


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