substantia nigra

substantia nigra

[suhb-stan-shee-uh nahy-gruh, nig-ruh]
noun, plural substantiae nigrae [suhb-stan-shee-ee nahy-gree, nig-ree] , substantia nigras.
a deeply pigmented area of the midbrain containing dopamine-producing nerve cells.

Origin:
1880–85; < Neo-Latin: black substance

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Collins
World English Dictionary
substantia nigra (səbˈstænʃə ˈnaɪɡrə)
 
n
a layer of grey matter in the brain that produces dopamine and contains pigmented nerve cells, loss of which has been associated with Parkinson's disease
 
[C20: from Latin, literally: dark material]

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American Heritage
Medical Dictionary

substantia nigra substantia ni·gra (nī'grə, nĭg'rə)
n.
A layer of large pigmented nerve cells in the mesencephalon that produce dopamine and whose destruction is associated with Parkinson's disease. Also called nigra.

The American Heritage® Stedman's Medical Dictionary
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