Echinodermata
/ɪˌkaɪnəʊdəˈmɑːtə/- Zoology a phylum of marine invertebrates which includes starfishes, sea urchins, brittlestars, crinoids, and sea cucumbers. They have fivefold radial symmetry, a calcareous skeleton, and tube feet operated by fluid pressure.【动】棘皮动物门。
派生词
echinoderm
/ɪˈkaɪnəʊdəːm/ noun词源
modern Latin (plural), from Greek ekhinos 'hedgehog, sea urchin' + derma 'skin'.