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superfetation

Syllabification: (su·per·fe·ta·tion)
Pronunciation: /ˌso͞opərˌfēˈtāSHən/

Definition of superfetation

noun

Medicine & Zoology
  • the occurrence of a second conception during pregnancy, giving rise to embryos of different ages in the uterus.
  • the accretion of one thing on another:the superfetation of ideas

Origin:

early 17th century: from French superfétation or modern Latin superfetatio(n-), from Latin superfetare, from super- 'above' + fetus 'fetus'

superfetation in other Oxford dictionaries

Definition of superfetation in the British & World English dictionary

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