polygeneticPronunciation: /ˌpɒlɪdʒɪˈnɛtɪk/Definition of polygenetic adjective relating to polygenesis; having more than one origin or source. Geology denoting or originating from a volcano that has erupted several times: polygenetic conglomerateDerivatives polygenetically adverb polygenetic in other Oxford dictionaries Definition of polygenetic in the US English dictionary