# triduum

> English word · Noun · IPA /ˈtɹɪ.dju.əm/

## Definitions
1. A period of three days (especially in Roman Catholic liturgy).

## Etymology
Borrowed from Latin trīduum, from trēs (“three”) + diēs (“day”).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/triduum