nervous system

noun

: the bodily system that in vertebrates is made up of the brain and spinal cord, nerves, ganglia, and parts of the receptor organs and that receives and interprets stimuli and transmits impulses to the effector organs see autonomic nervous system, central nervous system, peripheral nervous system

Examples of nervous system in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Reconcept says its approach allows the nervous system to reset by reducing physical pressure and sensory noise. Aamir Khollam, Interesting Engineering, 9 Jan. 2026 The reason for this lies in the biochemical communication between muscles and the nervous system. Desireé Oostland, Vogue, 8 Jan. 2026 Slow your pace, drink with food, and avoid taking shots, as this can help lower peak blood alcohol levels and reduce strain on your nervous system. Lauren Panoff, Verywell Health, 8 Jan. 2026 When this sickening sensation happens, the nervous system releases a chemical messenger called substance P, which then binds to receptors in the brain that activate the vomiting reflex — specifically neurokinin-1, or NK-1, receptors. Emily Kay Votruba, EverydayHealth.com, 8 Jan. 2026 See All Example Sentences for nervous system

Word History

First Known Use

1703, in the meaning defined above

Time Traveler
The first known use of nervous system was in 1703

Browse Nearby Words

Cite this Entry

“Nervous system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nervous%20system. Accessed 10 Jan. 2026.

Kids Definition

nervous system

noun
: the bodily system that receives stimuli, decides on their importance, and sends nerve impulses to the organs of action and that in vertebrates is made up of brain and spinal cord, nerves, ganglia, and parts of the receptor organs

Medical Definition

nervous system

noun
: the bodily system that in vertebrates is made up of the brain and spinal cord, nerves, ganglia, and parts of the receptor organs and that receives and interprets stimuli and transmits impulses to the effector organs see autonomic nervous system, central nervous system, peripheral nervous system

More from Merriam-Webster on nervous system

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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