optic chiasma

noun

Definition of optic chiasma

  1. :  the X-shaped partial decussation on the undersurface of the hypothalamus through which the optic nerves are continuous with the brain —called also optic chiasm

First Known Use of optic chiasma

1872


Medical Dictionary

optic chiasma

noun

Medical Definition of optic chiasma

  1. :  the X-shaped partial decussation on the undersurface of the hypothalamus through which the optic nerves are continuous with the brain—called also optic chiasm


Seen and Heard

What made you want to look up optic chiasma? 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

lethargy or dullness

Get Word of the Day daily email!

Test Your Vocabulary

Time Traveler Quiz: Which Word Came First?

  • time-traveler-quiz-which-word-came-first
  • Which came first?
True or False

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

TAKE THE QUIZ
SCRABBLE® Sprint

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!