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Noun: gray substance
Usage: US (elsewhere: grey substance)
  1. Greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neurons
    "The gray substance of the brain is responsible for processing information";
    - grey matter [Brit, Cdn], gray matter [US], grey substance [Brit, Cdn], substantia grisea

Derived forms: gray substances

Type of: nerve tissue, nervous tissue

Part of: cerebral cortex, cerebral mantle, cortex, pallium

Encyclopedia: Gray substance