superfecundation

[ soo-per-fee-kuh n-dey-shuh n, -fek-uh n- ]
/ ˌsu pərˌfi kənˈdeɪ ʃən, -ˌfɛk ən- /

noun

the fertilization of two or more ova discharged at the same ovulation by successive acts of sexual intercourse.

Origin of superfecundation

1850–55; super- + fecundation

British Dictionary definitions for superfecundation

superfecundation
/ (ˌsuːpəˌfiːkənˈdeɪʃən) /

noun

physiol the fertilization of two or more ova, produced during the same menstrual cycle, by sperm ejaculated during two or more acts of sexual intercourse