1. Plurality of wives or husbands at the same time.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• pologomy,
• plygamy,
• pologamy,
• poligamy,
• polgamy,
• poligomy,
• polygomy,
• polgygamy,
• poloyamy,
• polygemy,
• plogamy,
• polygama,
• pollygamy,
• polygnally,
• polysommy,
• playgam,
• polldavy,
• polyarcy,
• Polycappellary,
• Polygalia

• polygonal,
• polysomy,
• polygonatum,
• polygyny,
• polygonia,
• polygamist,
• polygonales,
• polygamous,
• polygene,
• polygonally,
• polygonum,
• polygynist,
• polysemy,
• polygon,
• polygynous.

The adjective form of the word "polygamy" is "polygamous".

The plural of the "polygamy" can be the "polygamies".

The singular of the "polygamy" can be the "polygamy".