polygyny

The condition or practice of having more than one wife at one time.

A mating pattern in which a male mates with more than one female in a single breeding season.

The condition of having more than one queen. Used of an insect colony.

Marriage or cohabitation of one man with more than one woman at the same time; polygamy as practised by the male.

Of a male animal, the state of having more than one female mate.

The state or practice of having several wives at the same time; marriage to several wives.

The state or practice of having several wives at the same time; plurality of wives; marriage to several wives – H. Spencer

having more than one wife at a time