A usage of the Greek Church corresponding somewhat to the octave of a feast in the Latin Church
Apodosis (Gr. apodosis, a giving back), a usage of the Greek Church corresponding somewhat to the octave of a feast in the Latin Church. For several days after a great feast the celebrant turns back to certain prayers of the feast and repeats them in commemoration of it. The last day of such repetition of the prayers of the previous feast is called the apodosis. This time may be longer or shorter than the Latin octave of one week, because great feasts in the Greek Church are commemorated for a longer time than minor ones.
ANDREW J. SHIPMAN