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Related to polygamy: Polyamory
the practice of having two or more spouses at one time.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
1. The condition or practice of having more than one spouse at one time.
2. Zoology A mating pattern in which a single individual mates with more than one individual of the opposite sex.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
polygamyA marriage comprised of more than two partners.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
polygamyMarriage to more than one spouse, simultaneously.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
polygamya mating system of animals in which one sexual partner mates with several of the opposite sex (see POLYANDRY, POLYGYNY). Polygyny is the most common form, and would seem to be present when one parent (usually the male) does not play a large part in rearing the young.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005