echinoderm Syllabification: (echi·no·derm)Pronunciation: /iˈkīnəˌdərm, ˈekənəˌdərm/Definition of echinoderm noun Zoology a marine invertebrate of the phylum Echinodermata, such as a starfish, sea urchin, or sea cucumber. echinoderm in other Oxford dictionaries Definition of echinoderm in the British & World English dictionary
