Polyanthropy

Polyanthropy has two definitions:

1. A gender neutral equivalent to polygyny and polyandry
2. An umbrella term for polygamy and polyamory.

The polyanthropy flag.

The adjective, referring to the person or qualities, can be polyanthropist, polyanthrope, polyanthropic, polyanthropical, polyanthric or polyanthropous.

Etymology

Poly- comes from Greek polus ‘much’, polloi ‘many’. -anthropy from Ancient Greek ánthrōpos “human”.