| 单词 | Echinothurioida |
| 释义 | Echinothurioida [´ek·ǝ·nō·thu̇·rē`ȯid·ǝ] INVERTEBRATE ZOOLOGY An order of echinoderms in the superorder Diadematacea with solid or hollow primary radioles, diademoid ambulacral plates, noncrenulate tubercles, and the anus within the apical system. |
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