‖n. pl. [ NL., from Gr. kri`non lily + -oid: cf. F. crinoïde. ] (Zool.) A large class of Echinodermata, including numerous extinct families and genera, but comparatively few living ones. Most of the fossil species, like some that are recent, were attached by a jointed stem. See Blastoidea, Cystoidea, Comatula. [ 1913 Webster ]

n. (Zool) One of the Crinoidea. [ 1913 Webster ]

‖n. pl. [ NL. See Encrinus and -oid. ] (Zoöl.) That order of the Crinoidea which includes most of the living and many fossil forms, having jointed arms around the margin of the oral disk; -- also called Brachiata and Articulata. See Illusts. under Comatula and Crinoidea. [ 1913 Webster ]

‖n. pl. [ NL. See Paleo-, and Crinoidea. ] (Zool.) A suborder of Crinoidea found chiefly in the Paleozoic rocks. [ 1913 Webster ]