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superfetation

[soo-per-fee-tey-shuh n] /ˌsu pər fiˈteɪ ʃən/
noun
1.
the fertilization of an ovum in a female mammal already pregnant.
Origin
1595-1605
1595-1605; < Latin superfētāt(us) (past participle of superfētāre to conceive again while still pregnant, equivalent to super- super- + fētā(re) to breed (see fetus) + -tus past participle suffix) + -ion
Related forms
superfetate, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for superfetation
  • There's even a name for what happened: superfetation, or conceiving while pregnant.
British Dictionary definitions for superfetation

superfetation

/ˌsuːpəfiːˈteɪʃən/
noun
1.
(physiol) the presence in the uterus of two fetuses developing from ova fertilized at different times
Derived Forms
superfetate (ˌsuːpəˈfiːteɪt) adjective
Word Origin
C17 superfetate, from Latin superfētāre to fertilize when already pregnant, from super- + fētāre to impregnate, from fētus offspring
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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