(neuroanatomy) Ellipsis of arachnoid mater..

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

An arachnid.

Relating to or resembling spider webs; covered with or composed of soft loose hairs or fibers.

(anatomy) Relating to the arachnoid mater.

(arachnology, relational) Relating to or resembling spiders.