Polygamy is a marital practice where an individual has more than one spouse simultaneously. It contrasts with monogamy, where an individual is married to only one spouse at a time.
Related terms
Monogamy: A form of marriage in which an individual has only one spouse at a time.
Bigamy: The act of entering into a marriage with one person while still legally married to another.
Kinship: A system of social relationships that forms the basis of family connections and defines familial roles and responsibilities