Etymology

triduum

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Today it means: A period of three days (especially in Roman Catholic liturgy). Full definition →

Latin trīduum
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The story

  1. Latin · borrowed fromtrīduum
  2. English todaytriduum

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

Etymology from Wiktionary, CC BY-SA 4.0.