arachnoid /əˈɹæk.nɔɪd/adjective 3noun 3forms 1 adjective3 •Relating to or resembling spiders. •Relating to the arachnoid mater. •Relating to or resembling spider webs; covered with or composed of soft loose hairs or fibers. noun3 •An arachnid. •Ellipsis of arachnoid mater. •A round network of fractures in the crust of Venus. formsarachnoids
