ARACHNOIDS
- A fine, delicate membrane, the middle one of the three membranes or meninges that surround the brain and spinal cord, situated between the dura mater and the pia mater
- ARACHNOID, a thin membrane of the brain and spinal cord [n]
- ARACHNOID, the arachnoid membrane, a fine delicate membrane which is the middle of the three meninges enveloping the brain and spinal cord [n]