Adventitious
Pronunciation : Ad`ven*ti"tious
Part of Speech : a.
Etymology : [L. adventitius.]
Definition : 1. Added extrinsically; not essentially inherent; accidental or causal; additional; supervenient; foreign. To things of great dimensions, if we annex an adventitious idea of terror, they become without comparison greater. Burke.
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.
Source : Webster's Unabridged Dictionary, 1913