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English definition of “echinoderm”

echinoderm

noun [C]     /ɪˈkaɪ.nəʊ.dɜːm/ US  /-dɝːm/ specialized
a type of sea creature with raised areas or sharp points on its skin and a body made of five equal parts arranged around the centre: Echinoderms like the starfish live on the sea floor.Sea creaturesSea fish
(Definition of echinoderm noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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