Canadian Medical Guide > Organisms > Animals > Invertebrates > Echinodermata > Sea Urchins Terms and Definitions




Sea Urchins

Medical Definition: Somewhat flattened, globular echinoderms of the class Echinoidea, having thin, brittle shells of calcareous plates.
Guide Notes: sea urchin eggs = OVUM (IM) + SEA URCHINS (NIM) if merely test organism
Also Called: Sand-Dollar
Previously Indexed: Echinodermata (1966-1971)

Sea Urchins Medical Definitions and Terms

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