Simple Definition of nervous system

from our Learner's Dictionary

nervous system

noun

plural nervous systems
: the system of nerves in your body that sends messages for controlling movement and feeling between the brain and the other parts of the body

Cite this Entry

“Nervous system.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/nervous%20system. Accessed 23 Jun. 2026.

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