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Dictionary
Word: Echinoidea
ID Word Wordtype Definition 49429 Echinoidea n. pl. 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.
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Phrenitis | Crunch | Excoriation | Besmeared | Solvent |
