preplacental

pre·pla·cen·tal

(prē'plă-sen'tăl),
Before formation of a placenta.

preplacental

(prē″plă-sĕn′tăl) [″ + placenta, a flat cake]
Occurring prior to formation of the placenta.
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References in periodicals archive ?
We use the terms preuterine, uterine, and postuterine hypoxia, which are probably more adequate than preplacental, uteroplacental, and postplacental hypoxia because the former terms reflect more accurately the pathomechanisms of these types of placental injury than the latter terms do, in line with the original intention of those that introduced those latter terms.
Changes in fetal capillaries during preplacental hypoxia: growth, shape remodelling and villous capillarization in placentae from high-altitude pregnancies.