subarachnoid

[ suhb-uh-rak-noid ]
/ ˌsʌb əˈræk nɔɪd /

adjective Anatomy.

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

Origin of subarachnoid

First recorded in 1830–40; sub- + arachnoid

Example sentences from the Web for subarachnoid