The arachnoid is a thin membrane which lies beneath the dura mater.
"A Practical Physiology" by Albert F. Blaisdell
Describe the arachnoid membrane.
"A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition)" by Calvin Cutter
Meanwhile, we're disgorging the arachnoid membranes with cowld applications, and we're relievin' the cerebellum by repose.
"The Fortunes Of Glencore" by Charles James Lever
The arachnoid has also shown slight congestion, and in other cases the membranes showed a slight thickening.
"Barium, A Cause of the Loco-Weed Disease" by Albert Cornelius Crawford