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 first article explained how strength training helps your nervous system feel safe and supported. Dana Santas, CNN Money, 17 Sep. 2025 The Centers for Disease Control and Prevention (CDC) says lead in the blood during pregnancy can increase the risk of a miscarriage, cause a baby to be born too early or too small, hurt a baby's brain, kidneys, and nervous system or cause a child to have behavioral problems. Toby Meyjes, MSNBC Newsweek, 17 Sep. 2025 Those infected can experience damage to the nervous system, heart muscles and digestive system. Jennifer Rodriguez, Miami Herald, 17 Sep. 2025 Physical activity, in particular, is known to release tension from the body and calm the nervous system. Angelica Stabile, FOXNews.com, 16 Sep. 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 20 Sep. 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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