subarachnoid

[ suhb-uh-rak-noid ]

adjective

, Anatomy.

1. of, relating to, or situated below the arachnoid membrane.

Word History and Origins

Origin of subarachnoid¹

First recorded in 1830–40; sub- + arachnoid

Example Sentences

The brain was generally blood-red; in the cerebral hemispheres there were several large circumscribed subarachnoid extravasations.

From Project Gutenberg

The blood may escape through the pia mater into the subarachnoid cavity, and large clots be formed.

From Project Gutenberg