Po*lyg"a*mous (?), a. [Gr. living polygamy; many + marriage. Cf. Bigamy.]
1.
Of or pertaining to polygamy; characterized by, or involving, polygamy; having a plurality of wives; as, polygamous marriages; -- opposed to monogamous.
2. Zool.
Pairing with more than one female.
Most deer, cattle, and sheep are polygamous.
Darwin.
3. Bot.
Belonging to the Polygamia; bearing both hermaphrodite and unisexual flowers on the same plant.
© Webster 1913.