Definition of Grey matter

1. Noun. Greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neurons.

Definition of Grey matter

1. Noun. (idiomatic) Brains; a person's ability to think. ¹

2. Noun. (context: neuroanatomy) A collection of cell bodies and (usually) dendritic connections, in contrast to (term white matter). ¹

¹ Source:

Medical Definition of Grey matter

1. Gray matter, the thinking brain, appears gray because it is composed of numerous nerve cells and blood vessels. The outer layer of the cerebrum - the cerebral cortex and areas deep within the brain - the basal ganglia, are made up of grey matter. See: white matter. (16 Dec 1997)

Lexicographical Neighbors of Grey Matter

grey crow
grey crows
grey eminence
grey fox
grey ghost
grey ghosts
grey goo
grey hat
grey hats
grey heron
grey herons
grey jay
grey magick
grey market
grey markets
grey matter (current term)
grey mullet
grey mullets
grey noise
grey nomad
grey nomads
grey partridge
grey red-backed vole
grey seal
grey seals
grey substance
grey tinamou
grey tinamous
grey whale
grey wolf

Literary usage of Grey matter

Below you will find example usage of this term as found in modern and/or classical literature:

1. Anatomy, descriptive and surgical by Henry Gray (1864)
"The grey commissure consists of a transverse band of grey matter, ... The crescentic portions of the grey matter soon blend into a single mass, ..."

2. A Text Book of Physiology by Michael Foster (1891)
"In the grey matter of the spinal cord, in the parts spoken of as the anterior cornua, we meet with remarkable nerve cells of the following characters. ..."

3. A Text Book of Physiology by Michael Foster (1894)
"... the motor impulses, which sweep down the motor fibres to the muscles, issue marshalled and coordinated from the grey matter of the cord (for the sake of ..."

4. Quain's Elements of Anatomy by Jones Quain, Edward Albert Sharpey-Schäfer, George Dancer Thane, Johnson Symington (1893)
"The floor, which is narrow, is formed, underneath the epithelium, of grey matter continuous with that of the Sylvian aqueduct, and this central grey matter ..."

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