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

See Words from the same year
NEW! Time Traveler

Medical Dictionary

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

Learn More about reticular formation


Seen and Heard

What made you want to look up reticular formation? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to beat or defeat soundly

Get Word of the Day daily email!

Test Your Vocabulary

Test Your Emoji Exceptionalism

  • test-your-emoji-exceptionalism-written-with-a-lot-of-emoji
  • What is this emoji intended to represent: 🤳
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!