| 单词 | Polyplacophora |
| 释义 | Polyplacophora [´päl·i·pla`käf·ǝ·rǝ] INVERTEBRATE ZOOLOGY The chitons, an order of mollusks in the class Amphineura distinguished by an elliptical body with a dorsal shell that comprises eight calcareous plates overlapping posteriorly. |
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