English noun: trophoblast | |||
1. | trophoblast (animal) the membrane that forms the wall of the blastocyst in early development; aids implantation in the uterine wall | ||
Samples | After implantation of the blastocyst in the uterine wall the trophoblast divides into two layers, the chorion and the placenta. | ||
Broader (hypernym) | membrane, tissue layer | ||
Part meronym | blastosphere, blastula | ||