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1. Oxford Dictionary

   superfetation

   • IPA[ˌsuːpəfiːˈteɪʃn]

   英式

   • n.
     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

   • noun: superfetation

2. • 釋義

   n.

   名詞

   • 1. the occurrence of a second conception during pregnancy, giving rise to embryos of different ages in the uterus this is an example of superfetation and of ovulation during pregnancy
   • ▪ the accretion of one thing on another the superfetation of ideas
3. • 更多解釋

   superfetation

   • IPA[ˌso͞opərˌfēˈtāSHən]

   美式

   • n.
     the occurrence of a second conception during pregnancy, giving rise to embryos of different ... this is an example of superfetation and of ovulation during pregnancy

   Oxford American Dictionary