Definition of Gray substance

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


Medical Definition of Gray substance

1. The cortex of the brain which contains nerve cell bodies. The gray matter is in contrast to the white matter, the part of the brain that contains myelinated nerve fibres. The gray matter is so named because it in fact appears gray. The white matter is white because that is the colour of myelin, the insulation covering the nerve fibres. In the mysterious affair at styles (1920), agatha christie first quoted the fictional belgian detective hercule poirot in regard to his gray matter: 'this affair must be unravelled from within.' he tapped his forehead. 'these little grey cells. It is up to them as you say over here.' (12 Dec 1998)

Lexicographical Neighbors of Gray Substance

gray market
gray matter
gray matter
gray mullet
gray partridge
gray polypody
gray poplar
gray rami communicantes
gray sage
gray scale
gray sea eagle
gray skate
gray snapper
gray sole
gray substance (current term)
gray substance (current term)
gray syndrome
gray tuber
gray tubercle
gray wedge
gray whale
gray willow
gray wing
gray wolf
Graz
grazable
graze
grazeable
grazed
grazer

Other Resources:

Search for Gray substance on Dictionary.com!Search for Gray substance on Thesaurus.com!Search for Gray substance on Google!Search for Gray substance on Wikipedia!

Search