white matter

Noun
  1. is a type of: nerve tissue, nervous tissue - tissue composed of neurons
    subtypes: nerve pathway, nerve tract, pathway, tract - a bundle of myelinated nerve fibers following a path through the brain
    has: fibrous astrocyte - star-shaped cells with long processes; found in the white matter of the brain and spinal cord
    substance meronym: central nervous system, cns, systema nervosum centrale - the portion of the vertebrate nervous system consisting of the brain and spinal cord
    same as: substantia alba

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