diurnum

Latin

Etymology

Substantivization of diurnus (“day”, relational adjective). Sense 3 documented from the fourth century AD.

Pronunciation

• (Classical Latin) IPA^(key): /diˈur.num/, [d̪iˈʊrnʊ̃ˑ]
• (modern Italianate Ecclesiastical) IPA^(key): /diˈur.num/, [d̪iˈurnum]

Noun

diurnum n (genitive diurnī); second declension

1. a day's ration, daily proportion or allowance
2. an account book of day-to-day issues, daybook, record, minutes
   • 121 C.E., Suetonius, De Vita Caesarum:

     Extat talis scriptura in plerisque libris ac diurnis titulisque operum.

     We can still to this day see this font in number of books, account books, and on the front of many buildings.

3. (Late Latin) day (specifically the time when the sun is up)

   Synonym: diēs

Declension

Second-declension noun (neuter).

	singular	plural
nominative	diurnum	diurna
genitive	diurnī	diurnōrum
dative	diurnō	diurnīs
accusative	diurnum	diurna
ablative	diurnō	diurnīs
vocative	diurnum	diurna

Descendants

• Italo-Romance:
  • Corsican: ghjornu
  • Italian: giorno
  • Neapolitan: juorno
  • Sicilian: jornu
• Padanian:
  • Ligurian: giórno
  • Venetan: zorno, giorno
• Gallo-Romance:
  • Catalan: jorn
  • Franco-Provençal: jorn
  • Old French: jor (see there for further descendants)
  • Old Occitan: jorn
    • Occitan: jorn

Adjective

diurnum

1. inflection of diurnus:
   1. masculine accusative singular
   2. neuter nominative/accusative/vocative singular

Further reading

• "diurnum", in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• diurnum in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
• “diurnum”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press