Noun
O Antiphons in a 14th-century antiphonal.
O Antiphon (plural O Antiphons)
(Western Christianity) One of the antiphons sung or read at vespers at the end of Advent, in the days immediately before Christmas, each beginning “O …” in Latin and English, addressing Christ and beseeching him to come; the basis for the hymn “O Come, O Come, Emmanuel”.
Synonym: Greater Antiphon