paschal letter
noun
(in the early Christian church) a letter, written by a patriarch, archbishop, or bishop to a cleric under his authority, announcing the date of the next Easter festival.
Words nearby paschal letter
paschal candle,
paschal flower,
paschal i,
paschal ii,
paschal lamb,
paschal letter,
paschen body,
paschen series,
paschen-back effect,
pascin,
pasco