dorsal root


See under nerve root.

Nearby words

  1. dorsal nerve of clitoris,
  2. dorsal nerve of penis,
  3. dorsal nerve of scapula,
  4. dorsal nucleus,
  5. dorsal nucleus of vagus,
  6. dorsal root ganglion,
  7. dorsal scapular artery,
  8. dorsal scapular vein,
  9. dorsalgia,
  10. dorsalis

Origin of dorsal root

First recorded in 1930–35

nerve root

noun Anatomy.

a nerve fiber bundle that emerges from either side of the spinal cord and joins with a complementary bundle to form each spinal nerve in the series of spinal nerves: the root at the rear of the spinal cord (dorsal root or sensory root) conveys sensations to the central nervous system, and the root at the front (ventral root or motor root) conveys impulses to the muscles.

Origin of nerve root

First recorded in 1875–80 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for dorsal root

dorsal root


The sensory root of a spinal nerve.posterior root

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.