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substantia nigra

American  
[suhb-stan-shee-uh nahy-gruh, nig-ruh] / səbˈstæn ʃi ə ˈnaɪ grə, ˈnɪg rə /

noun

plural

substantiae nigrae, substantia nigras

  1. a deeply pigmented area of the midbrain containing dopamine-producing nerve cells.

substantia nigra British  
/ səbˈstænʃə ˈnaɪɡrə /

noun

  1. 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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of substantia nigra

1880–85; < New Latin: black substance

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.