Category:Ophiurioidea

O`phi*u`ri*oi"de*a, o`phi*u*roi"de*a, n. pl. Etym: [nl., fr. Gr. (zoöl.)

Defn: a class of star-shaped echinoderms having a disklike body, with Slender, articulated arms, which are not grooved beneath and are Often very fragile; -- called also ophiuroida and ophiuridea. See Illust. under brittle star.