Word Meaning

arachnoid definition and meaning

a. Resembling a spider's web; cobweblike.
a. Pertaining to a thin membrane of the brain and spinal cord, between the dura mater and pia mater.
a. Covered with, or composed of, soft, loose hairs or fibers, so as to resemble a cobweb; cobwebby.
n. The arachnoid membrane.
n. One of the Arachnoidea.