Sea Urchin — synonyms, definition
1. sea urchin (Noun)
1 synonym
urchin
1 definition
sea urchin (Noun) — Shallow-water echinoderms having soft bodies enclosed in thin spiny globular shells.
1 type of
echinoderm
4 types
Echinus esculentus edible sea urchin heart urchin sand dollar
2 parts of
Echinoidea class Echinoidea