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
Origin: [Gr. like a cobweb; spider, spider's web + e'i^dos form.]
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.
The numerical value of arachnoid in Chaldean Numerology is: 2
The numerical value of arachnoid in Pythagorean Numerology is: 1
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