trophoblast

Từ điển Oxford Learners Wordfinder Dictionary

noun

the membrane that forms the wall of the blastocyst in early development;
aids implantation in the uterine wall
- after implantation of the blastocyst in the uterine wall the trophoblast divides into two layers, the chorion and the placenta
• Derivationally related forms:
trophoblastic
• Hypernyms:
membrane, tissue layer
• Part Holonyms:
blastula, blastosphere