2. (Nat. Hist.)
Defn: Out of the proper or usual place; as, adventitious buds or roots.
3. (Bot.)
Defn: Accidentally or sparingly spontaneous in a country or district; not fully naturalized; adventive; — applied to foreign plants.
4. (Med.)
Defn: Acquired, as diseases; accidental.
— Ad`ven*ti"tious*ly, adv.
— Ad`ven*ti"tious*ness, n.
ADVENTIVE
Ad*ven"tive, a.
1. Accidental.
2. (Bot.)
Defn: Adventitious. Gray.