Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

suprachiasmatic nucleus

play
noun su·pra·chi·as·mat·ic nucleus \ˌsü-prə-ˌkī-əz-ˈma-tik-\

Definition of suprachiasmatic nucleus

  1. :  either of a pair of neuron clusters in the hypothalamus situated directly above the optic chiasma that receive photic input from the retina via the optic nerve and that regulate the body's circadian rhythms



1938

First Known Use of suprachiasmatic nucleus

1938


Medical Dictionary

suprachiasmatic nucleus

noun su·pra·chi·as·mat·ic nucleus

Medical Definition of suprachiasmatic nucleus

  1. :  either of a pair of neuron clusters in the hypothalamus situated directly above the optic chiasma that receive photic input from the retina via the optic nerve and that regulate the body's circadian rhythms—abbreviation SCN




Learn More about suprachiasmatic nucleus


Seen and Heard

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

WORD OF THE DAY

marked by grandiloquent style

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

perplex disapprove soothe reduce
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ