Reissner's fiber

noun
Reiss·​ner's fiber | \ ˈrīsnə(r)z-\

Definition of Reissner's fiber

: a band of fibers arising from the roof of the midbrain in many vertebrates, passing along the aqueduct and fourth ventricle to enter the central canal of the spinal cord, ending in the regions of the spinal nerves, being especially large in fishes, and probably taking part in visual reflexes or regulating flexion of the body

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for Reissner's fiber

after Ernst Reissner †1878 German anatomist

Keep scrolling for more

Comments on Reissner's fiber

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

WORD OF THE DAY

readily or continually undergoing change

Get Word of the Day daily email!

Test Your Vocabulary

Musical Words Quiz

  • gramophone
  • Which word describes a musical performance marked by the absence of instrumental accompaniment?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Add Diction

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!