polygamy
/pəˈlɪgəmɪ/noun
mass noun
1- the practice or custom of having more than one wife or husband at the same time多配偶（制）; 一夫多妻（制）; 一妻多夫（制）。
1.1
- Zoology a pattern of mating in which an animal has more than one mate of the opposite sex【动】多偶性。
1.2
- Botany the condition of bearing some flowers with stamens only, some with pistils only, and some with both, on the same or different plants【植】杂性; 多配性。
派生词
polygamist
noun词源
late 16th cent.: from French polygamie, via late Latin from Greek polugamia, from polugamos 'often marrying'.