substantia nigra[səb stan′s̸hē ə nī′grə]
substantia nigra definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a layer of dark cells in the midbrain that produce the neurotransmitter dopamine: Parkinson's disease is caused by an inadequate supply of dopamine
substantia nigra definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A layer of large pigmented nerve cells in the midbrain that produce dopamine and whose destruction is associated with Parkinson's disease.
Origin: New Latin : Latin substantia, substance + Latin nigra, feminine of niger, black.
substantia nigra - Medical Definition
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.