\Po*lyg"a*my\, n. [Gr. ?; cf. F. polygamie.]
1. The having of a plurality of wives or husbands at the same
   time; usually, the marriage of a man to more than one
   woman, or the practice of having several wives, at the
   same time; -- opposed to monogamy; as, the nations of the
   East practiced polygamy. See the Note under {Bigamy}, and
   cf. {Polyandry}.
2. (Zo["o]l.) The state or habit of having more than one
   mate.
3. (Bot.) The condition or state of a plant which bears both
   perfect and unisexual flowers.