The scientific study of the geographical extent or limits of anything: The chorology of organisms, is the study of the geographical and topographical distribution of animal and vegetable species.

Chorology is the science dealing with the laws of distribution of living organisms over the Earth's surface as to latitude, altitude, locality, etc.

Chorology is also the study of the causal relations between geographical phenomena occurring within a particular region.

In addition, chorology is concerned with the spatial distribution of organisms.