Longman Dictionary of Contemporary English
alt. 1 (context idiomatic English) brains; a person's ability to think. 2 (context neuroanatomy English) A collection of cell bodies and (usually) dendrite connections, in contrast to (term: white matter). n. 1 (context idiomatic English) brains; a person's ability to think. 2 (context neuroanatomy English) A collection of cell bodies and (usually) dendrite connections, in contrast to (term: white matter).
n. greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neurons [syn: gray matter, grey substance, gray substance, substantia grisea]
Grey matter (or gray matter) is a major component of the central nervous system, consisting of neuronal cell bodies, neuropil ( dendrites and myelinated as well as unmyelinated axons), glial cells ( astroglia and oligodendrocytes), synapses, and capillaries. Grey matter is distinguished from white matter, in that it contains numerous cell bodies and relatively few myelinated axons, while white matter contains relatively very few cell bodies and is composed chiefly of long-range myelinated axon tracts. The colour difference arises mainly from the whiteness of myelin. In living tissue, grey matter actually has a very light grey colour with yellowish or pinkish hues, which come from capillary blood vessels and neuronal cell bodies.
Grey matter is a component of the central nervous system.
Grey Matter may also refer to:
Grey Matter is the début full-length album from Canadian indie-rock band Wool on Wolves. It was self-released on November 9, 2010 and produced by Nik Kozub of Shout Out Out Out Out.
Grey Matter is a 2011 Rwandan film directed by Kivu Ruhorahoza.