'Superfecundation' definitions:
Definition of 'superfecundation'
(from WordNet)
noun
Fertilization of two or more ova released during the same menstrual cycle by sperm from separate acts of coitus (especially by different males)
Definition of 'Superfecundation'
From: GCIDE
- Superfecundation \Su`per*fec`un*da"tion\, n. (Physiol.) Fertilization of two ova, at the same menstruation, by two different acts of coition. [1913 Webster]