| Library / English Dictionary |
WHITE MATTER
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
Whitish nervous tissue of the CNS consisting of neurons and their myelin sheaths
Synonyms:
Classified under:
Hypernyms ("white matter" is a kind of...):
nerve tissue; nervous tissue (tissue composed of neurons)
Meronyms (parts of "white matter"):
fibrous astrocyte (star-shaped cells with long processes; found in the white matter of the brain and spinal cord)
Hyponyms (each of the following is a kind of "white matter"):
nerve pathway; nerve tract; pathway; tract (a bundle of myelinated nerve fibers following a path through the brain)
Holonyms ("white matter" is a substance of...):
central nervous system; CNS; systema nervosum centrale (the portion of the vertebrate nervous system consisting of the brain and spinal cord)
Context examples:
It is differentiated from the white matter by color of the tissues and the presence of more myelinated nerve cells in the white matter.
(Gray Matter, NCI Thesaurus)
White matter changes first described in children with leukemia, associated with radiation and chemotherapy injury, often associated with methotrexate; pathologically characterised by diffuse reactive astrocytosis with multiple areas of necrotic foci without inflammation.
(Leukoencephalopathy, NCI Thesaurus)
They tend to occur in the optic nerve and white matter of the brain and spinal cord.
(Ganglioglioma, NLM, Medical Subject Headings)
An organ composed of grey and white matter containing billions of neurons that is the center for intelligence and reasoning.
(Brain, NCI Thesaurus)
A morphologic finding that refers to the presence of ectopic white matter in a tissue sample.
(Entrapped White Matter Present, NCI Thesaurus)
It is characterized by damage of the white matter in the brain and degeneration of the adrenal glands.
(Neonatal Adrenoleukodystrophy, NCI Thesaurus)
The areas of the brain composed of neurons and (in contrast to the white matter) unmyelinated nerve fibers.
(Brain Gray Matter, NCI Thesaurus)
Because brain injuries and diseases often affect these areas differently, models are needed that exhibit grey and white matter compartmentalization.
(Bioengineers create functional 3D brain-like tissue, NIH)
People who have hypertension have a greater chance of accumulating white matter lesions and also of experiencing cognitive disorders and dementia later in life.
(Intensive blood pressure control may slow age-related brain damage, National Institutes of Health)
OPCs are found to multiply in the brains of multiple sclerosis patients as if to respond to myelin damage, but for unknown reasons they are not effective in restoring white matter.
(Drugs that activate brain stem cells may reverse multiple sclerosis, NIH)
