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

subarachnoid

play
adjective sub·arach·noid \-ə-ˈrak-ˌnȯid\

Definition of subarachnoid

  1. :  of, relating to, occurring, or situated under the arachnoid membrane <subarachnoid hemorrhage>



1843

First Known Use of subarachnoid

1843

Variants of subarachnoid

also sub·arach·noid·al play \-rak-ˈnȯi-dəl\

Medical Dictionary

subarachnoid

play
adjective sub·arach·noid \ˌsəb-ə-ˈrak-ˌnȯid\

Medical Definition of subarachnoid

  1. 1:  situated or occurring under the arachnoid membrane <subarachnoid hemorrhage>

  2. 2:  of, relating to, or involving the subarachnoid space and the fluid within it <subarachnoid meningitis>



Variants of subarachnoid

also sub·arach·noid·al \-rak-ˈnȯid-əl\play

Learn More about subarachnoid

  1. Medical Dictionary: Definition of "subarachnoid"


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).

WORD OF THE DAY

February 9, 2016

marked by high spirits and laughter

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

kittly-benders pince-nez duvet spindrift
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ