English for Today by Ganiu Abisoye Bamgbose (Dr GAB)
POLYGAMY, POLYGYNY, POLYANDRY
Polygamy: the practice or custom of having more than one wife or husband at the same time.
Polygyny: the state or practice of having more than one wife or female mate at a time.
Polyandry: the state or practice of having more than one husband or male mate at one time.
GAB