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
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In the summer, strolling and biking along the four reservoirs completely reset my nervous system; in the winter, the water becomes a frozen playground where people of all ages build snowmen and figure skate to their heart’s content. Condé Nast, Condé Nast Traveler, 25 Mar. 2026 More than half of the USDA's samples of peaches, plums, nectarines and pears had residues of fludioxonil, which may harm the liver, hormones and nervous system, the EWG said based on findings from animal studies. Mike Snider, USA Today, 24 Mar. 2026 If left untreated, the infection can spread to joints, the heart and the nervous system. Mary Kekatos, ABC News, 24 Mar. 2026 Emotional contributors to Sam’s chronic pain, for example, included the depression and sadness that made his body hurt more, and the untreated stress and anxiety that kept his nervous system in overdrive. Big Think, 24 Mar. 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

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Cite this Entry

“Nervous system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nervous%20system. Accessed 29 Mar. 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

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