noun[mass noun] Medicine & Zoology
Fertilization of a second ovum during the same oestrus cycle as a result of a second mating, leading to fetuses of the same age but different parentage.
- Traditionally, cases of superfecundation have been discovered by the starkly different appearances of twins.
- The scientific term describing fraternal twins by different fathers is heteropaternal superfecundation.
- Obviously, the twins resulting from superfecundation are dizygotic.
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