(in aquatic arachnids) any of several pairs of external gills that each contain numerous fine lamellae; also called gill book.
| 单词 | θ33844 |
| 释义 | the world > animals > invertebrates > phylum Arthropoda > order Xiphosura or Merostomata > [noun] > genus Limulus > member of > parts of > respiratory organ (1) book gill1897 (in aquatic arachnids) any of several pairs of external gills that each contain numerous fine lamellae; also called gill book. |
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