gray matter

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Definitions (3)

Toggle American Heritage definitions American Heritage Dictionary (2)

  1. noun Brownish-gray nerve tissue, especially of the brain and spinal cord, composed of nerve cell bodies and their dendrites and some supportive tissue.
  2. noun Informal Brains; intellect.

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Roget's II Roget's II: The New Thesaurus

Roget's II: The New Thesaurus, Third Edition by the Editors of the American Heritage® Dictionary. Copyright © 2003, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 

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