Single marriage; marriage with but one person, husband or wife, at the same time; -- opposed to polygamy. Also, one marriage only during life; -- opposed to deuterogamy.
- The practice or condition of having a single sexual partner during a period of time.
- The practice or condition of being married to only one person at a time.
- The practice of marrying only once in a lifetime.
- Zoology The condition of having only one mate during a breeding season or during the breeding life of a pair.