1 (Annunciation) a the announcing of the Incarnation, made by the angel Gabriel to Mary, related in Luke 1:26-38. b the festival commemorating this (Lady Day) on 25 March.
2 a the act or process of announcing. b an announcement.
Etymology: ME f. OF annonciation f. LL annuntiatio -onis (as ANNUNCIATE)
Useful english dictionary. 2012.