reticular formation

noun

Definition of reticular formation

: a mass of nerve cells and fibers situated primarily in the brain stem that plays an important role in controlling autonomic functions (such as respiration), reflexive movement, posture and balance, and consciousness and the sleep-wake cycle

First Known Use of reticular formation

1887, in the meaning defined above

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The first known use of reticular formation was in 1887

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Cite this Entry

“Reticular formation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reticular%20formation. Accessed 18 Apr. 2021.

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More Definitions for reticular formation

reticular formation

noun

Medical Definition of reticular formation

: a mass of nerve cells and fibers situated primarily in the brain stem and functioning upon stimulation especially in arousal of the organism

called also reticular substance

More from Merriam-Webster on reticular formation

Britannica.com: Encyclopedia article about reticular formation

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