adjective Biology, Ecology.

  1. originating in or occupying different geographical areas.


  1. (of biological speciation or species) taking place or existing in areas that are geographically separated from one anotherCompare sympatric


  1. Occurring in separate, nonoverlapping geographic areas. Allopatric populations of related organisms are unable to interbreed because of geographic separation.♦ The development of new species as a result of the geographic separation of populations is called allopatric speciation. Compare sympatric.

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