embryotrophe

noun

em·​bry·​o·​trophe ˈem-brē-ə-ˌtrōf 

variants or embryotroph

-ˌträf  -ˌtrȯf 

: the pabulum of uterine tissue fluids and cellular debris that nourishes the embryo of a placental mammal prior to the establishment of the placental circulation compare hemotrophe, histotrophe