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SEA URCHIN
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
Shallow-water echinoderms having soft bodies enclosed in thin spiny globular shells
Classified under:
Hypernyms ("sea urchin" is a kind of...):
echinoderm (marine invertebrates with tube feet and five-part radially symmetrical bodies)
Hyponyms (each of the following is a kind of "sea urchin"):
Echinus esculentus; edible sea urchin (a sea urchin that can be eaten)
sand dollar (flattened disklike sea urchins that live on sandy bottoms)
heart urchin (sea urchin having a heart-shaped body in a rigid spiny shell)
Holonyms ("sea urchin" is a member of...):
class Echinoidea; Echinoidea (sea urchins and sand dollars)
