Alien

Definition

A term used in biology, including entomology, to describe an organism that is not native to a particular region or ecosystem.

Etymology

From Latin 'alienus', meaning 'foreign' or 'other'.

Example

The introduction of alien species can have devastating impacts on local ecosystems.

Synonyms

• Non-native
• Foreign

Related Terms

• Exotic
• Introduced
• Invasive

Usage Notes

Alien species are often referred to as invasive species when they become established and cause harm.