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From: Webster's Revised Unabridged Dictionary (1913)

 Pol·y·ge·net·ic a.
 1. Having many distinct sources; originating at various places or times.
 2. Biol. Of or pertaining to polygenesis; polyphyletic.
 Polygenetic mountain range Geol., one which is composite, or consists of two or more monogenetic ranges, each having had its own history of development.
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