Merriam-Webster Logo
SINCE 1828
Menu
×

An Encyclopædia Britannica Company

extrapyramidal

adjective ex·tra·py·ra·mi·dal \ ˌek-strə-pə-ˈra-mə-dᵊl , -ˌpir-ə-ˈmi-dᵊl \
See What's Trending Now See More Trending Words

Definition of extrapyramidal

: situated outside of the pyramidal tracts; also : involving descending nerve tracts other than the pyramidal tracts

First Known Use of extrapyramidal

circa 1902

in the meaning defined above

See Words from the same year
NEW! Time Traveler

Medical Dictionary

extrapyramidal

adjective ex·tra·py·ra·mi·dal \ -pə-ˈram-əd-ᵊl , -ˌpir-ə-ˈmid-ᵊl \

medical Definition of extrapyramidal

: situated outside of and especially involving descending nerve tracts other than the pyramidal tracts
  • extrapyramidal brain lesions

Seen and Heard

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

show hide

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

homogeneous

play

of the same or a similar kind or nature

Get Word of the Day daily email!

TRENDING NOW

  1. embolization 'the process by which a blood vessel or organ is obstructed by a material mass'

  2. oleaginous 'marked by an offensively ingratiating manner or quality'

  3. pansexual 'sexual desire or attraction...not limited to a particular gender identity or sexual orientation'

  4. symbiote 'an organism living in symbiosis'

  5. charlatan 'faker or fraud'

SEE ALL

BROWSE DICTIONARY

extrapyramidal

Test Your Vocabulary

May 2018 Words of the Day Quiz

  • spring-flowers
  • Which is a synonym of raillery?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

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

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play

alt-5b06e60511014
'Deprived' vs. 'Depraved'

Nobody wants to be either.

alt-5b05d8545c817
'Folksonomy': Let’s Get Organized

Tag the way you want to tag.

image564383649
12 Words from All Over the Map

Some words say exactly where they're from

alt-5b032d1aef0e9
'Ingenious' and 'Ingenuous': More Than a Typo

One's clever, the other's like a child

Ask the Editors

video-ghost-words
Ghost Word

The story of an imaginary word that managed to sneak past our editors and enter the dictionary.

image1760257654
2017 Word of the Year: Behind the Scenes

How we chose 'feminism'

video-literally
Literally

How to use a word that (literally) drives some people nuts.

video-his-or-her
Is Singular 'They' a Better Choice?

The awkward case of 'his or her'

Word Games

spring-flowers
May 2018 Words of the Day Quiz

We’re already at the end of May?!

Take the quiz
image1676440788
Words Used by Nabokov Quiz

How familiar are you with Nabokov’s unfamiliar vocabulary?

Take the quiz
Spell It
Spell It

Can you spell these 10 commonly misspelled words?

Take the quiz
Word Winder's CrossWinder
Word Winder's CrossWinder

A game of winding words.

Play the game