sphærogastra (ær as er)

pl. [Pref. sphæro-, and Gr. gaster (gen it. gastros ) the belly.j Zool.: The same as ARANEID A (q. v.). sphær-o-ma (ær as ër), s. [Gr. sphairoma = anything round.] Zool . The type-genus of Sphæromide (q. v.), with several species, which are vegetable feeders, and, like many of their allies, have the power of rolling themselves into a ball.