Dies Irae
1 of 2noun
Di·es Irae ˌdē-(ˌ)ās-ˈē-ˌrā 
: a medieval Latin hymn on the Day of Judgment sung in requiem masses
dies irae
2 of 2Latin noun phrase
di·es irae ˌdē-ˌās-ˈē-ˌrī
-ˌrā
: day of wrath : Judgment Day
Word History
Etymology
Noun
Medieval Latin, day of wrath; from the first words of the hymn
First Known Use
Noun
1860, in the meaning defined above