adjective. Of or relating to a delicate membrane enclosing the spinal cord and brain.

adjective. Of, relating to, or resembling arachnids.

adjective. Covered with or consisting of thin, soft, entangled hairs or fibers resembling those of a cobweb or spider's web.

noun. An arachnid.

noun. A delicate membrane that encloses the spinal cord and brain and lies between the pia mater and dura mater.

Of or pertaining to the Arachnida; arachnidan.

Like or likened to a cobweb: applied, in anatomy— to the arachnoid of the brain (see II.);

to the hyaloid membrane or arachnoid of the eye (see II.).

noun. A kind of fossil madrepore.

noun. In anatomy, the serous membrane enveloping the brain and spinal cord; the middle one of the three cerebrospinal meninges, between the dura mater and the pia mater.

noun. An old and disused name of the hyaline or hyaloid membrane within the eyeball, especially of that portion of it which contributes to form the capsule of the crystalline lens.

noun. The arachnoid membrane.

noun. One of the Arachnoidea.

adjective. Resembling a spider's web; cobweblike.

adjective. Pertaining to a thin membrane of the brain and spinal cord, between the dura mater and pia mater.

adjective. Covered with, or composed of, soft, loose hairs or fibers, so as to resemble a cobweb; cobwebby.

adjective. Relating to spiders.

adjective. Relating to or resembling spider webs.

adjective. Relating to the arachnoid mater, the middle layer of the meninges, the three membranes that protect the brain.

noun. An arachnid

noun. The arachnoid mater, the middle layer of the meninges, the three membranes that protect the brain

noun. A round network of fractures in the crust of Venus

noun. air-breathing arthropods characterized by simple eyes and four pairs of legs

noun. the middle of the 3 meninges

adjective. relating to or resembling a member of the class Arachnida

"The inflammation results in thickening of the middle membrane, called the arachnoid, causing it to adhere to structures near it."

arachnoid canal  arachnoid membrane  arachnoid tunic  

meninges  meninx  

basilar  chorioallantoic  chorionic  conjunctiva  degree-3  

cobwebby  cobweblike