The act or right of purchasing something jointly; in Roman law, a form of marriage transaction.
From Latin coemptio (co- + emere, to buy). The English noun form uses the Latin suffix -tion to create an abstract noun from the Latin concept.
Coemption appears in Shakespeare and legal texts as a marriage term—it's how the wealthy formalized marriages, embedding commerce into matrimony in ways that reveal how much English legal tradition inherited from Roman customs.
Complete word intelligence in one call. Free tier — 50 lookups/day.