a. 蛛形纲动物的, 蛛网状的, 蛛网膜的

n. 蛛形纲动物, 蛛网膜

[医] 蛛网样的; 蛛网膜

Arachnoid \A*rach"noid\, a. [Gr. ? like a cobweb; ? spider,
spider's web + e'i^dos form.]
1. Resembling a spider's web; cobweblike.

2. (Anat.) Pertaining to a thin membrane of the brain and
spinal cord, between the dura mater and pia mater.

3. (Bot.) Covered with, or composed of, soft, loose hairs or
fibers, so as to resemble a cobweb; cobwebby.


Arachnoid \A*rach"noid\, n.
1. (Anat.) The arachnoid membrane.

2. (Zo["o]l.) One of the Arachnoidea.