Definitions of Echinoidea

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Definition of 'Echinoidea'

Princeton's WordNet

1. (noun) Echinoidea, class Echinoidea
sea urchins and sand dollars

Definition of 'Echinoidea'

Webster Dictionary

1. Echinoidea
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

'Echinoidea' - Nearby Entries
echinoderm echinoderm family echinoderm genus echinoidea echinops echinus echinus esculentus

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