adjective Biology, Ecology.
- originating in or occupying different geographical areas.
- (of biological speciation or species) taking place or existing in areas that are geographically separated from one anotherCompare sympatric
- 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.