- any of the marine invertebrate animals constituting the phylum Echinodermata, characterized by tube feet, a calcite body-covering (test), and a five-part symmetrical body. The group includes the starfish, sea urchins, and sea cucumbers
单词 | echinoderm |
释义 | WordReference Random House Unabridged Dictionary of American English © 2024 e•chi•no•derm (i kī′nə dûrm′, ek′ə nə-),USA pronunciation n.
Collins Concise English Dictionary © HarperCollins Publishers:: echinoderm /ɪˈkaɪnəʊˌdɜːm/ n
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