Death's dreadful advent.
Young.
Expecting still his advent home.
Tennyson.
Ad"vent*ist (&?;), n. One of a religious body, embracing several branches, who look for the proximate personal coming of Christ; -- called also Second Adventists. Schaff-Herzog Encyc.
Ad`ven*ti"tious (&?;), a. [L. adventitius.] 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.) Out of the proper or usual place; as, adventitious buds or roots.
3. (Bot.) Accidentally or sparingly spontaneous in a country or district; not fully naturalized; adventive; -- applied to foreign plants.