echinoidea - Meaning and Examples

Meaning of 'echinoidea' (Webster Dictionary)

1 . 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.

Nearby Words:

echauguette eche echelon echidna echidnine echinate echinated echini echinid echinidan

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