Monogamy
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
The state of having only one husband or one wife at a time. A marriage contracted between one man and one woman, in exclusion of all the rest of mankind. The term is used in opposition to "bigamy" and "polygamy."
Wolff. Dr. Nat. § 857.