Definition of subarachnoid in English:

subarachnoid

Line breaks: sub|arach¦noid
Pronunciation: /ˌsvbəˈraknɔɪd
 
/

adjective

Anatomy
Denoting or occurring in the fluid-filled space around the brain between the arachnoid membrane and the pia mater, through which major blood vessels pass.
More example sentences
  • Major findings include subdural and subarachnoid hemorrhages and diffuse axonal injury in the brain and retinal hemorrhages in the eyes.
  • Local extension, rapid growth, invasion of adjacent structures, and CNS spread via the ventricular system or subarachnoid space are often suggestive of, but not always diagnostic of, malignancy.
  • I have been through a serious medical ordeal, involving a subarachnoid aneurysm (blood vessel in my brain leaking) and subsequent brain surgery.

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