Definitions for arachnoidəˈræk nɔɪd
This page provides all possible meanings and translations of the word arachnoid
Random House Webster's College Dictionary
of or belonging to the arachnids.
of or pertaining to the arachnoid.
Bot. formed of or covered with long, delicate hairs or fibers.
(n.)the serous membrane forming the middle of the three coverings of the brain and spinal cord.
Ref: Compare dura mater , meninges , pia mater .
Origin of arachnoid:
1745–55; < NL arachnoīdes < Gk arachnoeidḗs cobweblike. See arachnid , -oid
arachnoid, arachnoid membrane(noun)
the middle of the 3 meninges
air-breathing arthropods characterized by simple eyes and four pairs of legs
arachnoid, arachnidian, spidery, spiderlike, spiderly(adj)
relating to or resembling a member of the class Arachnida
The arachnoid mater, the middle layer of the meninges, the three membranes that protect the brain
A round network of fractures in the crust of Venus
Relating to spiders.
Relating to or resembling spider webs.
Relating to the arachnoid mater, the middle layer of the meninges, the three membranes that protect the brain.
Origin: ἀράχνη + -oid
resembling a spider's web; cobweblike
pertaining to a thin membrane of the brain and spinal cord, between the dura mater and pia mater
covered with, or composed of, soft, loose hairs or fibers, so as to resemble a cobweb; cobwebby
the arachnoid membrane
one of the Arachnoidea
In astrogeology, an arachnoid is a large structure of unknown origin, and they have been found only on the surface of the planet Venus. Arachnoids get their name from their resemblance to spider webs. They appear as concentric ovals surrounded by a complex network of fractures, and can span 200 kilometers. Over thirty arachnoids have been identified on Venus, so far. The arachnoid might be a strange relative to the volcano, but possibly different arachnoids are formed by different processes.
U.S. National Library of Medicine
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 CEREBROSPINAL FLUID.
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