Invader

Definition

An organism that has arrived in an area from elsewhere, often causing harm to the local ecosystem. Other terms for invader include nonindigenous, non-native, and adventive.

Etymology

From Latin 'invadere', meaning 'to attack'.

Example

The introduction of the invasive species, the emerald ash borer, has devastated ash tree populations.

Related Terms

• Nonindigenous
• Introduced species
• Exotic species