adventive 外来生物
不定株
adventive[ adj ]
not native and not fully established; locally or temporarily naturalized
<adj.all>
an adventive weed
Adventive \Ad*ven"tive\, a.
1. Accidental.
2. (Bot.) Adventitious. --Gray.
Adventive \Ad*ven"tive\, n.
A thing or person coming from without; an immigrant. [R.]
--Bacon.