Wordnet 3.0
ADJECTIVE (1)
1.
not native and not fully established;
locally or temporarily naturalized;
- Example: "an adventive weed"
The Collaborative International Dictionary of English v.0.48:
Adventive \Ad*ven"tive\, a.
1. Accidental.
[1913 Webster]
2. (Bot.) Adventitious. --Gray.
[1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Adventive \Ad*ven"tive\, n.
A thing or person coming from without; an immigrant. [R.]
--Bacon.
[1913 Webster]
WordNet (r) 3.0 (2006):
adventive
adj 1: not native and not fully established; locally or
temporarily naturalized; "an adventive weed"