from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Whitish nerve tissue, especially of the brain and spinal cord, consisting chiefly of myelinated nerve fibers.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun neuroanatomy A region of the central nervous system containing myelinated nerve fibres and no dendrites

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun whitish nervous tissue of the CNS consisting of neurons and their myelin sheaths


Sorry, no etymologies found.


    Sorry, no example sentences found.


Log in or sign up to get involved in the conversation. It's quick and easy.