| 单词 | petaloidal |
| 释义 | > as lemmaspetaloidal ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [adjective] > relating to or resembling sea-urchin > of parts of > of petaloid ambulacra petaloidal1822 petaloid1837 1822 J. Parkinson Outl. Oryctol. 123 Each pair [of ambulacra] forming a petaloidal figure. 1872 H. A. Nicholson Man. Palæontol. 109 Ambulacra composed of simple pores, not petaloidal. < as lemmas |
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