Arachnoid

An Illustrated Dictionary of Medicine, Biology and Allied Sciences · 1907 · p. 4

tar - ah'- uoid, a spider's web; eldoq, form. Resembling a web. A. Cavity, the space between the arachnoid membrane and the dura mater. A. Membrane, the delicate serous membrane of the brain and cord between the dura and pia mater. Sub-arachnoid fluid. See Cerebrospinal Fluid.