词族 · ectoderm
词形变化
英语词源
- ectoderm (n.)
- 1853, from ecto- + -derm. Coined by Prussian embryologist Robert Remak (1815-1865). Related: Ectodermal.
权威例句
- 1. The outer layer of a blastula that gives rise to the ectoderm after gastrulation.
- 外胚层囊胚的外层,在原肠胚形成之后生后外胚层组织.