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|Noun||1.||phylum Echinodermata - radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers|
animal kingdom, Animalia, kingdom Animalia - taxonomic kingdom comprising all living or extinct animals
echinoderm - marine invertebrates with tube feet and five-part radially symmetrical bodies
phylum - (biology) the major taxonomic group of animals and plants; contains classes
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