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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Think of it as the nervous system that connects, transforms, and delivers data securely and efficiently to anyone who needs it, regardless of where the data actually lives. Forbes.com, 15 July 2025 Chrysanthemum, which can irritate the stomach and affect the nervous system. Sacbee.com, 14 July 2025 Chronic dysregulation of the nervous system, marked by sustained elevated cortisol levels, is already known to increase the risk of cardiovascular disease, insulin resistance and immune dysfunction. Melissa Fleur Afshar, MSNBC Newsweek, 6 July 2025 People who are over 50, have compromised immune systems, or have chronic conditions such as diabetes or kidney disease are at higher risk for the virus to infect their nervous systems. Meg Wingerter, Denver Post, 3 July 2025 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 19 Jul. 2025.

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

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