myEtymology.com: Latin etymology of triduum

Etymology of the Latin word triduum

the Latin word triduum (three days)

derived from the Latin word dies (day; daylight; specific day; day in question; date of letter)

derived from the Proto-Indo-European root *dyeu-

using the Latin prefix tri-

derived from the Classical Latin word tres (three)

derived from the Proto-Indo-European root *trei-

English triduum, Portuguese tríduo, Spanish triduo