Etymology
The word "allogenic" is derived from the Greek words:
Meaning and Origin
"Allogenic" refers to something that originates from a different source or region, particularly in the context of geology, medicine, and ecology.
Geology
In geology, allogenic refers to materials or processes that originate outside of a depositional basin. For example, allogenic sediment is transported into a basin by rivers, glaciers, or wind from an external source.
Medicine
In medicine, allogenic refers to tissue or organs transplanted from a different individual. In contrast, "autogenic" refers to tissue or organs transplanted from the same individual.
Ecology
In ecology, allogenic refers to factors or influences that originate outside of an ecosystem. These factors can affect the ecosystem's structure, function, and dynamics. Examples include climate changes, nutrient inputs, or the presence of invasive species.
Usage
Allogenic is a commonly used term in academic and scientific fields, including geology, medicine, ecology, and environmental science. It is often contrasted with the terms "authogenic" (originating from within) and "autogenic" (self-generated).
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