substantia nigra

noun (1)
sub·​stan·​tia ni·​gra | \ səb-ˌstan(t)-shē-ə-ˈnī-grə How to pronounce substantia nigra (audio) , -ˈni-\
plural substantiae nigrae\ səb-​ˌstan(t)-​chē-​ˌē-​ˈnī-​(ˌ)grē How to pronounce substantiae nigrae (audio) , -​ˈni-​ \

Definition of substantia nigra

 (Entry 1 of 3)

: 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

lotio nigra

noun (2)
lo·​tio ni·​gra | \ ˈlōshēˌōˈnīgrə\

Definition of lotio nigra (Entry 2 of 3)

nigra scale

noun (3)
nig·​ra scale | \ ˈnigrə-\

Definition of nigra scale (Entry 3 of 3)

: a coccid (Saissetia nigra) that is a serious pest on cotton, coffee, and other plants of warm temperate regions

First Known Use of substantia nigra

Noun (1)

1809, in the meaning defined above

History and Etymology for substantia nigra

Noun (1)

New Latin, literally, black substance

Noun (2)

New Latin

Noun (3)

New Latin nigra (specific epithet of Saissetia nigra, species of coccid), from Latin, feminine of niger black, dark

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The first known use of substantia nigra was in 1809

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More Definitions for substantia nigra

substantia nigra

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

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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