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superfecundation

[soo-per-fee-kuh n-dey-shuh n, -fek-uh n-]
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noun
  1. the fertilization of two or more ova discharged at the same ovulation by successive acts of sexual intercourse.
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Origin of superfecundation

1850–55; super- + fecundation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for superfecundation

superfecundation

noun
  1. 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
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012