Dictionary
sub•stan•ti•a ni•gra
Pronunciation: (sub-stan'shē-u nī'gru, nig'ru), [key]
—pl. sub•stan•ti•ae ni•graePronunciation: (sub-stan'shē-ē" nī'grē, nig'rē), [key] substantia nigras.
a deeply pigmented area of the midbrain containing dopamine-producing nerve cells.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.