Definition of polygynandry in English:

polygynandry

Pronunciation /ˌpɒlɪdʒɪˈnandri/

noun

Anthropology Zoology
  • A form of polygamy in which in two or more men share two or more wives; (Zoology) a pattern of mating in which two or more males mate with two or more females; the fact or state of being polygynandrous.

Origin

1960s. From polygyn- + -andry.