English

intraplacental

From intra- + placental.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁énteros ‘inside, within’

Latin *interus

Latin intrā ‘within’

Proto-Hellenic *pləks

…

Ancient Greek πλακοῦς ‘flat cake’

Ancient Greek πλακόεντα

Latin placenta

Latin placentalis

Today it means

adj Within a placenta

Language periods are conventional ranges, not dates for this word.

Etymograph / intraplacental