ARACHNOID

arachnoid, arachnidian, spidery, spiderlike, spiderly

(adjective) relating to or resembling a member of the class Arachnida

arachnid, arachnoid

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

arachnoid, arachnoid membrane

(noun) the middle of the 3 meninges

Source: WordNet® 3.1

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Etymology

Adjective

arachnoid (not comparable)

Relating to or resembling spiders.

Relating to or resembling spider webs.

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

Noun

arachnoid (plural arachnoids)

(biology) An arachnid

(physiology) The arachnoid mater, the middle layer of the meninges, the three membranes that protect the brain

(astronomy) A round network of fractures in the crust of Venus

Source: Wiktionary

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A*rach"noid, a. Etym: [Gr.

1. Resembling a spider's web; cobweblike.

2. (Anat.)

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

3. (Bot.)

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

A*rach"noid, n.

1. (Anat.)

Definition: The arachnoid membrane.

2. (Zoöl.)

Definition: One of the Arachnoidea.

Source: Webster’s Unabridged Dictionary 1913 Edition

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