Meaning

noun having two spouses at the same time

noun the offense of marrying someone while you have a living spouse from whom no valid divorce has occurred

originFrom Middle English bigamie (“having two spouses simultaneously, bigamy; second marriage; marrying a widow or widower”) [and other forms], from Anglo-Norman bigamie and Middle French bigamie (“having two spouses simultaneously; second marriage; marrying a widow or widower”) (modern French bigamie (“bigamy”)), and its etymon Late Latin bigamia (“having two spouses simultaneously; second…

Etymology from Wiktionary, CC BY-SA 3.0