polygynous

"Polygynous" comes from Greek roots meaning "many" and "woman." It describes a mating system in which one male mates with multiple females. In animals, this often means that some males mate a lot while others do not mate at all. Males may compete for females through strength, territory, resources, or courtship displays.

You'll most commonly encounter "polygynous" in animal behavior and evolutionary biology. For example, researchers might describe a bird species as "strongly polygynous" if a small number of males get most of the matings. This often leads to strong sexual selection, so traits that help males win mates can become more noticeable over time, such as bright feathers or large antlers.

However, this term should be used carefully when discussing human societies. Some cultures have historically practiced polygyny, meaning that one man had multiple wives, but human marriage systems involve social, legal, economic, and religious factors that go beyond a simple biological pattern. In that context, it is often clearer to refer to polygynous marriage or to say that a society practiced polygyny.

So, whether you're studying animal behavior or historical cultures, "polygynous" points to a pattern in which one male has more than one female partner. In nature, that pattern is often shaped by competition, resources, and reproduction.