Designating each of the sacs or tubes connected with the circular vessel of the water-vascular system in many echinoderms. Chiefly in Polian vesicle.
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| 单词 | θ33448 |
| 释义 | the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [noun] > subphylum Eleutherozoa > class Echinoidea > member of (sea-urchin) > parts of > caecal canal (1) Polian vesicle1852 Designating each of the sacs or tubes connected with the circular vessel of the water-vascular system in many echinoderms. Chiefly in Polian vesicle. |
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