ectoderm

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˈɛktəʊˌdɜːm/US:USA pronunciation: respellingUSA pronunciation: respelling(ek′tə dûrm′)


WordReference Random House Unabridged Dictionary of American English © 2026
ec•to•derm  (ek′tə dûrm′),USA pronunciation n. [Embryol.]
  1. Developmental Biologythe outer germ layer in the embryo of a metazoan. Also called ectoblast. 
  • 1860–65; ecto- + -derm
ec′to•der′mal, ec′to•der′mic, adj. 
ec•to•der•moi•dal  (ek′tō dər moid′l),USA pronunciation adj. 
Collins Concise English Dictionary © HarperCollins Publishers::
ectoderm /ˈɛktəʊˌdɜːm/, exoderm n
  1. the outer germ layer of an animal embryo, which gives rise to epidermis and nervous tissue
    See also mesoderm, endoderm
ˌectoˈdermal, ˌectoˈdermic adj
'ectoderm' also found in these entries (note: many are not synonyms or translations):
ectoblast - endoderm - exoderm - gastrula - mesoderm - derm - diploblastic - dorsal lip - ecto- - ectomere - ectomorphic - epiblast - germ layer - neuroepithelium - neurula - proctodeum - Rathke's pouch - trophoblast - somatopleure - stomodeum

Forum discussions with the word(s) "ectoderm" in the title:


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