trigamy
trigamy (trig-[schwa]-mee), n. The act of marrying a person while legally married to someone else and bigamously married to yet another. [Cases: Bigamy 1. C.J.S. Bigamy §§ 2–6, 8.] “Trigamy, literally three marriages, is often used for a special situation. ‘Trigamy,’ in the sense of the special problem of the third wife, stems from the […]