- the practice or condition of having more than one spouse, especially wife, at one time.
- the habit or system of mating with more than one individual, either simultaneously or successively.
- the practice of having more than one wife or husband at the same time
- the condition of having male, female, and hermaphrodite flowers on the same plant
- the condition of having these different types of flower on separate plants of the same species
- the practice in male animals of having more than one mate during one breeding season
