substantia nigrasub·stan·tia ni·gra
Origin of substantia nigraModL, black substance
Origin of substantia nigraNew Latin : Latin substantia, substance + Latin nigra, feminine of niger, black.
(plural substantiae nigrae or substantia nigras)
- A brain structure located in the mesencephalon (midbrain) that plays an important role in reward, addiction, and movement, damage to which occurs in Parkinson's and Parkinsonian patients.
Directly from Latin meaning the black body or substance.