The feast commemorating the announcement by the angel Gabriel to Mary that she would be the mother of God's Son, Jesus, and Mary's assent in faith to God's invitation (Lk 1:26-38). The Annunciation is celebrated on Mar. 25 (nine months before Christmas). The Annunciation is a Feast of our Lord in the BCP.
Glossary definitions provided courtesy of Church Publishing Incorporated, New York, NY,(All Rights reserved) from "An Episcopal Dictionary of the Church, A User Friendly Reference for Episcopalians," Don S. Armentrout and Robert Boak Slocum, editors.