Zoology. The perisarc of a coelenterate or graptolite.
单词 | θ32079 |
释义 | the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [noun] > class Hydrozoa > member of > hard covering (1) periderm1870 Zoology. The perisarc of a coelenterate or graptolite. |
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