adventive

[ad-ven-tiv] /ædˈvɛn tɪv/
adjective
1.
not native and usually not yet well established, as exotic plants or animals.
noun
2.
an adventive plant or animal.
Origin
1595-1605, for an earlier sense; < Latin advent(us) advance, incursion (see advent) + -ive
Related forms
adventively, adverb
Examples from the web for adventive
  • Establish biological controls in targets adventive range.
  • The focus is on using natural enemies against adventive pests.
British Dictionary definitions for adventive

adventive

/ədˈvɛntɪv/
adjective
1.
(of a species) introduced to a new area and not yet established there; exotic
noun
2.
such a plant or animal
Abbreviation casual
adventive in Science
adventive
  (ād-věn'tĭv)   
Not native to and not fully established in a new habitat or environment. An adventive plant may be locally or temporarily naturalized without finding conditions that allow it to spread more widely.