Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

substantia nigra

play
noun sub·stan·tia ni·gra \səb-ˌstan(t)-shē-ə-ˈnī-grə, -ˈni-\

Definition of substantia nigra

plural

substantiae nigrae

play \-chē-ˌē-ˈnī-(ˌ)grē, -ˈni-\
  1. :  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



Origin and Etymology of substantia nigra

New Latin, literally, black substance


First Known Use: circa 1882


Medical Dictionary

substantia nigra

play play
noun sub·stan·tia ni·gra \səb-ˌstan-chē-ə-ˈnī-grə, -ˈnig-rə\

Medical Definition of substantia nigra

plural

substantiae nigrae

\-chē-ˌē-ˈnī-(ˌ)grē, -ˈnig-(ˌ)rē\play play
  1. :  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




Learn More about substantia nigra


Seen and Heard

What made you want to look up substantia nigra? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to take off or remove

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

confounded-person

Which is a synonym of indolent?

philistine lazy melancholy frenetic
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ