A polyglot is someone who can speak many languages; something that is polychromatic has many colours, and polysemy is a word or phrase with multiple meanings
If polygamy is having more than one wife or husband at the same time, but a polygynist refers only to a man who has many wives. If polyandry is having more than one husband and a polygamist is usually a man who has more than one wife at the same time.
What do you call a "multiple father" or "multiple mother", someone who has more than one child with the same partner? And what do you call a parent who has two or more children with two or more different partners?
Best Answer
Though I am disgusted at the Greek-Latin lexical miscegenation, a parent of multiple children is polyprogenitive, from the Latin prōgeniēs, 'to beget'. From The Embodied Female:
Technically, and although it doesn't fit the poly- mold requested, a person with more than one child would be multiprogenic (or multi-progenic). (The Greek equivalent, as Janus pointed out, is polytecnic, from τέκνον meaning 'child, son'.)
Similarly, a person who has children with multiple partners, according to social scientists, practices multipartnered fertility.