Coemptio Law and Legal Definition

Coemptio refers to a common type of marriage in ancient Roman culture. It is a marriage ceremony depicting a 'bride purchase,' as the groom paid nummus usus, a penny, and received the bride in exchange. It is not a real sale, but it symbolized the traditional bride purchases of earlier societies.

Coemptio also refers to a fictitious sale of an estate to relieve it of sacrificial duties attached to it.