Definify.com
Webster 1913 Edition
Arachnoid
A-rach′noid
,Adj.
[Gr. [GREEK] like a cobweb; [GREEK] spider, spider’s web +
εἶδοσ
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.
A-rach′noid
,Noun.
1.
(Anat.)
The arachnoid membrane.
2.
(Zool.)
One of the Arachnoidea.
Webster 1828 Edition
Arachnoid
ARACH'NOID
,Adj.
In anatomy, the arachnoid tunic, or arachnoid, is a semitransparent thin membrane which is spread over the brain and piamater, and for the most part closely connected with the latter. The term has also been applied to that capsule of the crystalline lens, which is a continuation of the hyaloid membrane.
ARACH'NOID
,Noun.
Definition 2024
arachnoid
arachnoid
English
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
Translations
the arachnoid mater — see arachnoid mater