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Echinodermata   Listen
noun
Echinodermata  n. pl.  (Written also Echinoderma)  (Zoöl.) One of the grand divisions of the animal kingdom. By many writers it was formerly included in the Radiata. Note: The species usually have an exterior calcareous skeleton, or shell, made of many pieces, and often covered with spines, to which the name. They may be star-shaped, cylindrical, disk-shaped, or more or less spherical. The body consists of several similar parts (spheromeres) repeated symmetrically around a central axis, at one end of which the mouth is situated. They generally have suckers for locomotion. The group includes the following classes: Crinoidea, Asterioidea, Ophiuroidea, Echinoidea, and Holothurioidea. See these words in the Vocabulary, and also Ambulacrum.






Collaborative International Dictionary of English 0.48








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Words linked to "Echinodermata" :   phylum, Holothuroidea, Ophiuroidea, animal kingdom, class Ophiuroidea, class Asteroidea, kingdom Animalia, Crinoidea, echinoderm, Animalia, Echinoidea, phylum Echinodermata, class Holothuroidea



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