Nov 5, 2014
1. physical material having form and weight under ordinary conditions; called
also substance. 2. pus.
(Anatomy) the greyish tissue of the brain and spinal cord, containing nerve cell bodies, dendrites, and bare (unmyelinated) axons. Technical name: substantia ...
Definition of gray matter in the Idioms
those regions of the brain and spinal cord that are made up primarily of the cell bodies and dendrites of nerve cells rather than myelinated axons. Synonym(s): ...