Definition of Echinoidea. Meaning of Echinoidea. Synonyms of Echinoidea
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Definition of Echinoidea
EchinoideaEchinoidea Ech`i*noi"de*a, n. pl. [NL. See Echinus, and
The class Echinodermata which includes the sea urchins. They
have a calcareous, usually more or less spheroidal or
disk-shaped, composed of many united plates, and covered with
movable spines. See Spatangoid, Clypeastroid. [Written
also Echinidea, and Echinoida.]
Meaning of Echinoidea from wikipedia
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