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Not native to and not fully established in a new habitat or environment; locally or temporarily naturalized: an adventive weed.
An adventive organism.

[From Latin adventus, arrival; see advent.]

ad·ven′tive·ly adv.


(ədˈvɛntɪv) biology
(Biology) (of a species) introduced to a new area and not yet established there; exotic
(Biology) such a plant or animal
Abbreviation: casual


(ædˈvɛn tɪv)
1. not native and usu. not yet well established, as exotic plants or animals.
2. an adventive plant or animal.
ad•ven′tive•ly, adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.adventive - not native and not fully establishedadventive - not native and not fully established; locally or temporarily naturalized; "an adventive weed"
foreign, strange - relating to or originating in or characteristic of another place or part of the world; "foreign nations"; "a foreign accent"; "on business in a foreign city"
References in periodicals archive ?
Since 1956, the adventive centipede Rhysida longipes longipes (Newport, 1845; Scolopendromorpha: Scolopendridae: Otostigminae) has been documented on 4 occasions from the South Florida counties Miami-Dade and Monroe (Chamberlin 1958; Crabill 1960; Shelley 2002; Shelley & Edwards 2004) with a 5th, unverified sighting likely representing this species (see Shelley & Edwards 2004 for detailed review).
For physiognomy, Nt = native, Ad = adventive or non-native, P = perennial, A = annual, B = biennial, H = herbaceous, W = woody.
However, such method would be a prospective one only for the usage in local conditions of specific territories, whilst requiring control of possible occurrence and spontaneous disseminations of adventive and even quarantine species of plants in these conditions.
1904, as Eumenes esuriens [misidentification]); Indonesia: Sumatra, Java, Moluccas, Papua; Papua New Guinea; Australia; Philippines; adventive in U.
com)-- Leading digital ad platform, Adventive (www.
From 1960 to 1975 the adventive flora of Riga and Daugavpils railways was studied in detail (Sulcs, 1972, 1976, 1977).
The "Tomato fruit fly" is endemic to Madagascar; populations in La Reunion and Mauritius are probably adventive, and have been known since the 1950s (although perhaps previously overlooked) (White et al.
Boucher was President & CEO of Adventive, a cloud-based Rich Media Platform.
telmateia" in this paper): CA, cultivated near visitor entrance of Santa Barbara Botanic Garden, and adventive there, 25 March 2010, S.
Lantana is obfuscated by a propensity of the plants to form fertile hybrids and by a long history of horticultural hybridization and repeated cycles of naturalization and unassisted hybridization among adventive and native plants.
Cyperus iria has been known in Illinois for some time (Mohlenbrock 1986, 2002) as an adventive sedge of meadows and rice fields.
This species is currently treated as a non-indigenous adventive on the island (Woischke 2010).