gray substance

Thesaurus

Noun

1.

gray substance - greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neurons gray matter, grey matter, grey substance, substantia grisea nerve tissue, nervous tissue - tissue composed of neurons neuropil, 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 embedded cerebral cortex, cerebral mantle, cortex, pallium - the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum