Echinoid Meaning in Spanish

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1. (a.) Of or pertaining to the Echinoidea.
2. (n.) One of the Echinoidea.

1. (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.