Medical Dictionary

trophectoderm

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

Definition of TROPHECTODERM

:  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
April 01, 2015
diapause Hear it
a period of physiological dormancy
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears