from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Brains; a person's ability to think.
  • n. A collection of cell bodies and (usually) dendritic connections, in contrast to white matter.

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

  • n. greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neurons


Sorry, no etymologies found.


  • A broad layer of nerve-containing grey matter found bilaterally throughout the mesencephalon, or upper brain stem.

    Alcohol and The Addictive Brain

  • The whorls of grey matter swelled to entrails, they curled round one another like muscular snakes, became vague and misty like the spiral nebulae on astronomical charts ...



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