dorsal root(redirected from posterior root)
Also found in: Thesaurus, Medical, Legal, Encyclopedia.
Either of the two roots of a spinal nerve, consisting of sensory fibers and arising from the posterior section of the spinal cord.
Switch to new thesaurus
|Noun||1.||dorsal root - one of the two roots of a spinal nerve that passes dorsally to the spinal cord and that consists of sensory fibers|
afferent, afferent nerve, sensory nerve - a nerve that passes impulses from receptors toward or to the central nervous system