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superfecundation

su·per·fe·cun·da·tion [ spər fekən dáysh'n ] (plural su·per·fe·cun·da·tions)


noun 
Definition:
 
1. separate fertilization of ova: the fertilization of two or more ova at different times during one menstrual cycle by sperm from the same or different males

2. fertilization of many ova: the fertilization of an unusually large number of ova at the same time

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