1. not native to or naturally occurring in a particular place; introduced from elsewhere
Usage: often used in biological and ecological contexts

Examples

• The zebra mussel is a nonindigenous species that has invaded many North American waterways.
• Scientists are studying the impact of nonindigenous plants on local ecosystems.
• The park service works to remove nonindigenous vegetation from protected areas.
• Many nonindigenous fish species were accidentally introduced through ballast water.
• The garden featured both native wildflowers and nonindigenous ornamental plants.
• Researchers track the spread of nonindigenous insects that threaten crops.