Depositio
From BiblePortal Wikipedia
Depositio [1]
(in Hagiology). In martyrologies the word is applied to the death-day of a saint. This meaning is given it by Maximus in the sermon De Depositione S. Eusebii, and strongly held by Papebroch in his Conatus Chronologico- Histor. ad Calal. Pontiff Roman.
The word was doubtless used also to designate the day on which the relics were entombed.
