White-matter
noun, Anatomy.
1.
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).
white matter
noun
1.
the whitish tissue of the brain and spinal cord, consisting mainly of myelinated nerve fibres Technical name substantia alba Compare grey 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. Also called alba, substantia alba, white substance.
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.
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