Source : Webster's Revised Unabridged Dictionary (1913)

Polygenetic \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.