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

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

Keep scrolling for more

Learn More about dorsal root

Statistics for dorsal root

Look-up Popularity

Time Traveler for dorsal root

The first known use of dorsal root was in 1922

See more words from the same year

Keep scrolling for more

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

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

Comments on dorsal root

What made you want to look up dorsal root? Please tell us where you read or heard it (including the quote, if possible).


showing great care, attention, and effort

Get Word of the Day daily email!

Test Your Vocabulary

Finance Words Quiz

  • a-piggy-bank
  • The etymology of mortgage is related most closely to which two words?
True or False

Test your knowledge - and maybe learn something along the way.

Syn City

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!