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Từ điển Oxford Learners Wordfinder Dictionary
superfetation
fertilization of a second ovum after a pregnancy has begun;
results in two fetuses of different ages in the uterus at the same time
- superfetation is normal in some animal species
• Derivationally related forms:
superfetate
• Hypernyms:
fertilization, fertilisation, fecundation, impregnation
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