[f. echinodermata, by shortening], a member of the class Echinodermata; hence Echinodermal a. [see -AL] = ECHINODERMATOUS. ǁ Echinodermata sb. pl. [mod.L., f. Gr. δέρματ- stem of δέρμα skin], a class of animals formerly included in the Radiata, but now placed in the sub-kingdom Annuloida, including Sea-urchins, Sea-cucumbers, etc.; the name refers to the sharp-pointed spines with which the skin of the typical species is studded. Echinodermatous a., belonging to or resembling the echinodermata.
1835. Kirby, Hab. & Inst. Anim., I. vi. 201. The *Echinoderms form the second order of the Radiaries.
1886. Athenæum, 18 Dec., 828/2. The blastoids form an extinct group of stalked echinoderms.
1845. Whewell, Indic. Creator, 39. The higher types of *Echinodermal, Articulate, and Molluscous, Animals.
1835–6. Todd, Cycl. Anat., I. 109/2. Some marine animals without an *echinodermatous covering.
