adjective
- resembling a spider’s web.
- of or belonging to the arachnids.
- Anatomy. of or relating to the arachnoid membrane.
- Botany. formed of or covered with long, delicate hairs or fibers.
noun
- an arachnid.
- Anatomy. the serous membrane forming the middle of the three coverings of the brain and spinal cord.
noun
- the middle of the three membranes that cover the brain and spinal cordSee meninges
- another name for arachnid
adjective
- of or relating to the middle of the three meninges
- botany consisting of or covered with soft fine hairs or fibres
- of or relating to the arachnids
“cobweb-like,” especially of the membrane around the brain and spinal cord, 1789, from Modern Latin arachnoides, from Greek arakhnoeides “cobweb-like,” from arakhne “cobweb” (see arachnid) + -oeides (see -oid).
adj.
- Resembling a cobweb. Used of the arachnoid membrane covering the brain and spinal cord.
- The delicate membrane that encloses the spinal cord and brain and lies between the pia mater and dura mater.