'Advent' definitions:

Definition of 'advent'

From: WordNet
noun
Arrival that has been awaited (especially of something momentous); "the advent of the computer" [syn: advent, coming]
noun
The season including the four Sundays preceding Christmas
noun
(Christian theology) the reappearance of Jesus as judge for the Last Judgment [syn: Second Coming, Second Coming of Christ, Second Advent, Advent, Parousia]

Synonyms of 'advent'

From: Moby Thesaurus