the water-vascular system of an echinoderm.
| 单词 | θ33370 |
| 释义 | the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [noun] > member of > parts of > water-vascular system (2) hydrocœl1888 the water-vascular system of an echinoderm. Subcategories:— canal forming part of (1) |
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