Polygyny Law and Legal Definition

Polygyny is the condition or practice of having more than one wife. It is a form of marriage in which a man has two or more wives at the same time. Polygyny means multiple wives. [State v. Kingston, 2002 UT App 103 (Utah Ct. App. 2002)]. In countries where such practice is illegal, the man is referred to as a bigamist or a polygamist. It is the most common form of polygamy.

Polygyny differ from relationships where a man has a sexual partner outside marriage, such as a concubine, casual sexual partner, paramour, cohabitates with a married woman or other culturally but not legally recognized secondary partner.