From Middle High German [Term?], from Old High German [Term?], coined in the 8th century by Karl der Große. By surface analysis, Ostern (“Easter”) + Mond (“moon”). Compare English Eastermonth.
Ostermond m (proper noun, strong, genitive Ostermondes or Ostermonds, plural Ostermonde)
- (archaic, poetic) April, the fourth month of the Gregorian calendar, which most often includes Easter
- Synonyms: (common) April, (cognate) Ostermonat, Launing, Wandelmonat
Declension of Ostermond [masculine, strong]