Superfecundation is when multiple eggs from the same menstruation period are fertilized by different sperm.
An example of superfecundation is when two babies are conceived from two different sperm and two different eggs in the womb during the same cycle.
the fertilization of two ova at separate times during the same ovulation period
Origin of superfecundationsuper- + fecundation
Fertilization of more than one ovum within a single menstrual cycle by separate acts of coitus, especially by different males.