white matter


noun Anatomy.

nerve tissue, especially of the brain and spinal cord, which primarily contains myelinated fibers and is nearly white in color.Compare gray matter(def 1).

Nearby words

  1. white mahogany,
  2. white man's burden,
  3. white mariposa,
  4. white market,
  5. white marlin,
  6. white meat,
  7. white melilot,
  8. white metal,
  9. white meter,
  10. white mountain

Origin of white matter

First recorded in 1830–40

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for white matter

white matter

noun

the whitish tissue of the brain and spinal cord, consisting mainly of myelinated nerve fibresTechnical name: substantia alba Compare grey matter
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for white matter

white matter

n.

Whitish nerve tissue, especially of the brain and spinal cord, chiefly composed of myelinated nerve fibers and containing few or no neuronal cell bodies or dendrites.alba substantia alba white substance

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for white matter

white matter

The whitish tissue of the vertebrate brain and spinal cord, made up chiefly of nerve fibers (axons) covered in myelin sheaths. Compare gray matter.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.