The need for a clearly defined and consistent invasion biology terminology has been acknowledged by many sources. Invasive species

Invasive species

"Invasive species", or invasive exotics, is a nomenclature term and categorization phrase used for flora and fauna, and for specific restoration-preservation processes in native habitats, with several definitions....

, or invasive exotics

Introduced species

An introduced species — or neozoon, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its indigenous or native distributional range, and has arrived in an ecosystem or plant community by human activity, either deliberate or accidental...

, is a nomenclature term and categorization phrase used for flora and fauna, and for specific restoration-preservation processes in native habitat

Habitat

* Habitat , a place where a species lives and grows*Human habitat, a place where humans live, work or play** Space habitat, a space station intended as a permanent settlement...

s. Invasion biology is the study of these organisms and the processes of species invasion.

The terminology in this page contains definitions for invasion biology terms in common usage today, taken from accessible publications.