Monogamy

A marriage contracted between one man and one woman, in exclusion of all the rest of mankind; it is used in opposition to bigamy and polygamy. The state of having only one husband or one wife at one time.

Having an intimate relationship, usually sexual, with only one other person for a considerable length of time.

Some cynics say that monogamy is natural for women and unnatural for men.
   

This entry contains material from Bouvier's Legal Dictionary, a work published in the 1850's.