subarachnoid

adjective sub·arach·noid \ -ə-ˈrak-ˌnȯid \
variants: or less commonly subarachnoidal play \-rak-ˈnȯi-dᵊl\

Definition of subarachnoid

:of, relating to, occurring, or situated under the arachnoid membrane
  • subarachnoid hemorrhage

Recent Examples of subarachnoid from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'subarachnoid.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of subarachnoid

1843


Medical Dictionary

subarachnoid

adjective sub·arach·noid \ ˌsəb-ə-ˈrak-ˌnȯid \
variants: also subarachnoidal play \-rak-ˈnȯid-ᵊl\

medical Definition of subarachnoid

1 :situated or occurring under the arachnoid membrane
  • subarachnoid hemorrhage
2 :of, relating to, or involving the subarachnoid space and the fluid within it
  • subarachnoid meningitis

Seen and Heard

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

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

pleasing or sweet sound

Get Word of the Day daily email!

Test Your Vocabulary

Forms of Government Quiz

  • knupfer-painting-solon-before-croesus
  • A gerontocracy is rule by:
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

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!