the GNU version of the Collaborative International Dictionary of English
n. The state of being monogamous; having one wife at a time.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. having only one spouse at a time
Word Usage
"I speculate that, at least in the western half of Eurasia, Europe and Africa, there is a "cline" running from, say, Finland in the north to sub-Saharan Africa in the south, of decreasing personal tendency toward monogamousness."