Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A layer of large pigmented nerve cells in the midbrain that produce dopamine and whose destruction is associated with Parkinson's disease.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun The name given to the
dopaminergic pars in the tegmentum, which is naturally colored black. - noun Another part is the pars reticulata GABAergic close to pallidum
- noun The nucleus which is damaged in the brain of Parkinson's and Parkinsonian patients.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a layer of deeply pigmented grey matter in the midbrain; associated with the striate body; is involved in metabolic disturbances associated with Parkinson's disease and with Huntington's disease
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[New Latin : Latin substantia, substance + Latin nigra, feminine of niger, black.]
from Wiktionary, Creative Commons Attribution/Share-Alike License
Directly from Latin meaning the black body or substance.
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Examples
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