Term used to refer to something being constructed of tiny hairs; a cobweb is arachnoid in nature.

"cobweb-like," especially of the membrane around the brain and spinal cord, 1789, from Modern Latin arachnoides, from Greek arakhnoeides "cobweb-like," from arakhne "cobweb&qu [..]

Middle layer of membranes covering the brain and spinal cord.

Part of the membranes covering the brain. arbor

The thin covering (one of the three meninges) of the brain that lies between the dura mater and pia mater.

Middle layer of membranes covering the brain and spinal cord.

[Indumentum (hairs, etc.)] -- Cobwebby.

(n) the middle of the 3 meninges(n) air-breathing arthropods characterized by simple eyes and four pairs of legs(adj) relating to or resembling a member of the class Arachnida

The middle layer of the meninges of the brain; so-named (“like a cobweb”) because of its delicate network of tissue.

middle-layer of the the membranes which cover the brain and spinal cord aspiration

Resembles a cobweb membrane which covers the brain and spinal cord.

The arachnoid is the middle layer of the meninges . The arachnoid layer provides a smooth covering for the brain and acts as a support to the cerebral arteries and veins.

A delicate Membrane enveloping the Brain and spinal cord. It lies between the Pia Mater and the Dura Mater. It is separated from the Pia Mater by the subarachnoid cavity which is filled with CEREBROSP [..]

The middle of three membranes that cover and protect the brain and spinal cord. More about arachnoid cysts and sub-arachnoid hemorrhage.

Like a cobweb, covered with or consisting of soft fibres or hairs so entangled as to give a cobwebby appearance. (09 Oct 1997)