(Literally, mono one + gamos marriage)
Formally, the state or practice of having only one wedded spouse. Informally, the state or practice of having only one wedded spouse at a time, or more generally, having only one sexual partner or only one romantic relationship at a time.
Monogamous: of or related to the practice of monogamy, as in monogamous relationship: a relationship permitting one and only one romantic or sexual partner.
Contrast: polyamory,polygamy, polygyny, polyandry;
See related: closed marriage, serial monogamy.