MeSH definition : The FERTILIZATION of an OVUM that takes place when a FETUS is already present in the
UTERUS. Superfetation results in an unusual PREGNANCY with fetuses of different ages
and sizes developing in utero simultaneously.;
MeSH synonym : superfetations;
Wikipedia link : https://en.wikipedia.org/wiki/Superfetation;
The FERTILIZATION of an OVUM that takes place when a FETUS is already present in the
UTERUS. Superfetation results in an unusual PREGNANCY with fetuses of different ages
and sizes developing in utero simultaneously.