| 释义 |
ec·to·derm AHD[ĕkʹtə-dûrm'] D.J.[ˈektəˌdɜːm]K.K.[ˈɛktəˌdɝm]n.（名词）- The outermost of the three primary germ layers of an embryo, from which the epidermis, nervous tissue, and, in vertebrates, sense organs develop.外胚层：胚胎最初三层胚层中的最外一层，由此发育成为表皮、神经组织和脊椎动物的感觉器官
- The outer layer of a diploblastic animal, such as a jellyfish.外层：双胚层动物的外层，如海蜇
ec'toderʹmal 或 ec'toderʹmic adj.（形容词） |