Polygamy

Polygamy (from Late Greek πολυγαμία, polygamia, "state of marriage to many spouses") involves marriage with more than one spouse. When a man is married to more than one wife at a time, it is called polygyny. When a woman is married to more than one husband at a time, it is called polyandry. If a marriage includes multiple husbands and wives, it can be called a group marriage. In contrast, monogamy is marriage consisting of only two parties. Like "monogamy", the term "polygamy" is often used in a de facto sense, applied regardless of whether the relationship is recognized by the state. In sociobiology and zoology, researchers use polygamy in a broad sense to mean any form of multiple mating.