\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. --Dana.