polygamy
noun
°The having of a plurality of socially bonded sexual partners at the same time.
"''Originally polygamy could work either or both ways, but civilisation generally forbids simultaneous husbands"
°Commonly used specifically for polygyny, the marriage of a man to more than one wife, or the practice of having several wives, at the same time.
"''The Islamic form of polygamy is a husband with up to four wives"
synonyms: polygyny