superfetation
/ˌsjuːpəfɪˈteɪʃən/noun
mass noun
1- Medicine & Zoology the occurrence of a second conception during pregnancy, giving rise to embryos of different ages in the uterus【医, 动】异期复孕, 重孕。
1.1
- figurative the accretion of one thing on another〈喻〉增长, 堆积：
the superfetation of ideas.
才思泉涌。
词源
early 17th cent.: from French superfétation or modern Latin superfetatio（n-）, from Latin superfetare, from super- 'above'+ fetus 'foetus'.