English word intraplacental comes from English placental, English intra- (A prefix signifying inside, within, interior, during.)

Detailed word origin of intraplacental

Dictionary entry	Language	Definition
placental	English (eng)	Having a placenta.. Of or pertaining to the placenta, or to the Placentalia Any animal that is a member of the Placentalia.
intra-	English (eng)	A prefix signifying inside, within, interior, during.
intraplacental	English (eng)	Within a placenta.

Words with the same origin as intraplacental