trophoblast, n.
(trophoblasts)
(trophoblasts)
the membrane that forms the wall of the blastocyst in early development; aids implantation in the uterine wall
<noun.animal>
trophoblast
sample sentences
"after implantation of the blastocyst in the uterine wall the trophoblast divides into two layers, the chorion and the placenta"
lexical pointers
derivationally related form