In an echinoid: a small circular membranous region on the aboral surface containing the anus and a variable number of small embedded plates.
| 单词 | θ33359 |
| 释义 | the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [noun] > member of > parts of > integument or body-wall > part surrounding anus (1) periproct1869 In an echinoid: a small circular membranous region on the aboral surface containing the anus and a variable number of small embedded plates. |
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英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。