英语词汇“ectoderm”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ectoderm
释义	> as lemmas ectoderm ectoderm n. Brit. /ˈɛktədəːm/ , U.S. /ˈɛktəˌdərm/ the outer layer of the blastoderm, also called epiblast; also, a term applied to the outer layer of the body of the Cœlenterata. ΚΠ 1861 J. R. Greene Man. Animal Kingdom II. 11 The ectoderm growing from within outwards. 1879 tr. E. Haeckel Evol. Man I. iii. 67 The upper germ-layer, from which the outer skin and the flesh proceed, Huxley named Ecto-derm, or Outer layer. extracted from ecto-comb. form < as lemmas
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> as lemmas