1. not native to and not fully established in a new habitat or environment
Usage: biology; ecology

Examples

• The adventive plant species struggled to survive in the harsh climate.
• Botanists studied the adventive weeds that had spread from the nearby farm.
• Many adventive insects arrive accidentally in shipping containers.
• The adventive population failed to reproduce successfully in its new environment.
• Researchers tracked the movement of adventive species across the region.
• The adventive flora consisted mainly of European grasses and herbs.