grey substance

Thesaurus

Noun

1.

grey substance - greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neuronsgray matter, gray substance, grey matter, substantia griseanerve tissue, nervous tissue - tissue composed of neuronsneuropil, neuropile - the complex network of unmyelinated axones, dendrites, and glial branches that form the bulk of the central nervous system's grey matter and in which nerve cell bodies are embeddedcerebral cortex, cerebral mantle, cortex, pallium - the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum