POLIGAMIYa (az poli… va yunoni gamos— nikoh), dar davrai afzoish juft shudani yak narina bo yakchand modina (dar aksar shirkhurho, masalan, gurbai bahri, baze khoyandaho va jonvaroni alafkhur) yo yak modina bo yakchand narina (dar baze parrandaho, masalan, dar murgiho, aksari hasharot va gayraho). Nig. niz Monogamiya.