DictionarypolygamyMarriage to multiple spouses
noun

polygamy

puh-LIG-uh-mee/pəˈlɪɡəmi/

Being married to more than one spouse at the same time.

The wedding portrait depicts polygamy, with one groom and two brides.

A single wedding portrait with one groom and two brides, visibly presented as a shared marriage rather than two separate couples.
Etymology

The roots express “many marriages,” which in this sense means having multiple spouses at once. The marriage component does not specify whether those spouses are husbands or wives.

In context

Dickson Tumuramye43:55
there's polygamy that we might think of here in this country where somebody actually does marry multiple wives
Teens and Sex Chastity from the Medical Perspective by Kim Dernovsek, MD

More examples

  • The law addressed marriages involving polygamy.
  • Her research distinguished polygamy from a series of successive marriages.
  • The documentary discussed different cultural views of polygamy.

Forms

polygamy

polygamous adjective — involving multiple spouses at once

Similar words

bigamy
Bigamy concerns marrying while already married; polygamy names the practice or state of having multiple spouses.
polyandry
Polyandry specifically involves multiple husbands; polygamy covers multiple spouses more generally.