adventive

[ ad-ven-tiv ]
/ ædˈvɛn tɪv /
Botany, Zoology

adjective

not native and usually not yet well established, as exotic plants or animals.

noun

an adventive plant or animal.

Origin of adventive

1595–1605, for an earlier sense; < Latin advent(us) advance, incursion (see advent) + -ive

Related forms

ad·ven·tive·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for adventive

British Dictionary definitions for adventive

adventive

/ (ədˈvɛntɪv) biology /

adjective

(of a species) introduced to a new area and not yet established there; exotic

noun

such a plant or animal
Abbreviation: casual
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for adventive

adventive

[ ăd-vĕntĭv ]

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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.