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n. A period of three days (especially in Roman Catholic liturgy).

n. A space of three days.

n. In the Roman Catholic Church, prayers for the space of three days as a preparation for keeping a saint's day, or for obtaining some favor of God by means of the prayers of a saint.

"The triduum, the three holiest days of the Christian year, begin on Maundy Thursday evening, and conclude with the Easter Vigil, which begins at sundown on Saturday evening -- the days being reckoned in the church's original way of reckoning: the Jewish calendar."

Easter Triduum    Paschal Triduum   

dein    pugnam    decretis    vestitaque    Leiden    beatam    matura    certam    ubique    instrumentum