Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Medical Dictionary

trophectoderm

play
noun troph·ec·to·derm \ˌtrōf-ˈek-tə-ˌdərm\

Medical Definition of trophectoderm

  1. :  trophoblast; especially :  the outer layer of the mammalian blastocyst after differentiation of the ectoderm, mesoderm, and endoderm when the outer layer is continuous with the ectoderm of the embryo




Seen and Heard

What made you want to look up trophectoderm? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a secret group of plotters

Get Word of the Day daily email!