substantia nigra

noun
sub·stan·tia ni·gra | \səb-ˌstan(t)-shē-ə-ˈnī-grə, -ˈni-\
plural substantiae nigrae\səb-ˌstan(t)-chē-ˌē-ˈnī-(ˌ)grē, -ˈni- \

Definition of substantia nigra 

: a layer of deeply pigmented gray matter situated in the midbrain and containing the cell bodies of a tract of dopamine-producing nerve cells whose secretion tends to be deficient in Parkinson's disease

First Known Use of substantia nigra

1809, in the meaning defined above

History and Etymology for substantia nigra

New Latin, literally, black substance

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The first known use of substantia nigra was in 1809

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substantia nigra

noun
sub·stan·tia ni·gra | \səb-ˌstan-chē-ə-ˈnī-grə, -ˈnig-rə \
plural substantiae nigrae\-chē-ˌē-ˈnī-(ˌ)grē, -ˈnig-(ˌ)rē \

Medical Definition of substantia nigra 

: a layer of deeply pigmented gray matter situated in the midbrain and containing the cell bodies of a tract of dopamine-producing nerve cells whose secretion tends to be deficient in Parkinson's disease

More from Merriam-Webster on substantia nigra

Britannica.com: Encyclopedia article about substantia nigra

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