(especially in the Roman Catholic Church) a period of three days' observance, specifically Maundy Thursday, Good Friday, and Holy Saturday.
（尤指罗马天主教的）三日礼（特指濯足节、受难节和圣星期六）
Example sentencesExamples
A much more modern devotion, that to Blessed Martin the lay brother of Lima, first appeared at Sligo in 1955 when there was a November triduum in his honour.
The week works its way up to the Friday-Saturday-Sunday triduum.
That evening will be the conclusion of the triduum in preparation for the feast day, which takes place on Wednesday, June 25, Thursday, June 26 and Friday, June 27.
He added Lent was at one time in the Anglican body celebrated only on three days, called the triduum - Maundy Thursday, Good Friday and Holy Saturday.
The triduum in honour of the Sacred Heart will begin next Wednesday, June 25 at 7.30 pm and will continue at the same hour on Thursday and Friday.