1. Noun. The ectoderm from which the trophoblast develops ¹
¹ Source: wiktionary.com
Medical Definition of Trophectoderm
1. The extra embryonic part of the ectoderm of mammalian embryos at the blastocyst stage before the mesoderm becomes associated with the ectoderm.
This entry appears with permission from the Dictionary of Cell and Molecular Biology
(11 Mar 2008)
