a circular canal around the mouth, esp. one forming part of the digestive system of some coelenterates or the water-vascular system of echinoderms.
| 单词 | θ33360 |
| 释义 | the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [noun] > member of > parts of > canal forming structure (1) ring canal1869 a circular canal around the mouth, esp. one forming part of the digestive system of some coelenterates or the water-vascular system of echinoderms. |
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