1. plants or animals that have been introduced to a new environment but are not yet fully established
Usage: botanical; ecological

Examples

• The botanist studied adventives that had recently appeared in the local ecosystem.
• Many adventives struggle to survive their first winter in the new climate.
• The park service monitors adventives to prevent them from becoming invasive.
• These adventives were likely brought in accidentally with imported goods.
• Some adventives eventually become naturalized after several generations.
• The field guide includes a section on common adventives found in urban areas.