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1. (adj.) arachnoid
of or belonging to the arachnids.
2. arachnoid
of or pertaining to the arachnoid.
3. arachnoid
Bot. formed of or covered with long, delicate hairs or fibers.
4. (n.) arachnoid
the serous membrane forming the middle of the three coverings of the brain and spinal cord.
Etymology: (1745–55; < NL arachnoīdes < Gk arachnoeidēs cobweblike. See arachnid , -oid)
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| Definition of 'arachnoid' |
Princeton's WordNet |
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1. (noun) arachnoid, arachnoid membrane
the middle of the 3 meninges
2. (adj) arachnid, arachnoid
air-breathing arthropods characterized by simple eyes and four pairs of legs
3. (adj) arachnoid, arachnidian, spidery, spiderlike, spiderly
relating to or resembling a member of the class Arachnida
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| Definition of 'arachnoid' |
Webster Dictionary |
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1. (adj) arachnoid
resembling a spider's web; cobweblike
2. (adj) arachnoid
pertaining to a thin membrane of the brain and spinal cord, between the dura mater and pia mater
3. (adj) arachnoid
covered with, or composed of, soft, loose hairs or fibers, so as to resemble a cobweb; cobwebby
4. (noun) arachnoid
the arachnoid membrane
5. (noun) arachnoid
one of the Arachnoidea
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| Definition of 'arachnoid' |
U.S. National Library of Medicine |
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1. arachnoid
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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Definitions of arachnoid 
