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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The program’s primary purpose is to help diagnose and treat the disease that occurs when babies ingest botulism spores that germinate in the intestine and produce a dangerous toxin that attacks the nervous system, causing paralysis. ABC News, 24 Feb. 2026 The company feels like an extension of your own nervous system. Neil Senturia, San Diego Union-Tribune, 23 Feb. 2026 Just five minutes of movement can help reset your nervous system. Mark Divine, CNBC, 23 Feb. 2026 Your nervous system is your oracle; always pay attention to your body’s feedback. Magi Helena, Dallas Morning News, 22 Feb. 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 26 Feb. 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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