Polyanthropy

Polyanthropy has two definitions:


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

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”.