Etymologically

Etymology and origin of the Latin word diurnum

Confidence
Established
Formation
Derivation
First attested
Seneca the Elder
Ultimate origin
Latin diurnus
Etymology tree
inherited borrowed derived
Latin diurnus
Latin diurnum
French jour
Italian giorno
From the same root
English sojourn ← diurnum
French bonjour ← jour
French journée ← jour
French toujours ← jour
Italian buongiorno ← giorno
Italian giornale ← giorno
Italian giornata ← giorno

Pronunciation

  • Classical: [diˈʊr.nũː][1]
  • Ecclesiastical: [diˈur.num][1]

Forms

diurnum n (genitive diurnī); second declension[1]

Etymology

It is from Latin diurnus (“of the day, daily”), its neuter used as a noun.[2][1]

Earliest recorded meaning

It is first found in Seneca the Elder's Controversiae, both for a daily ration and for a daybook in which the day's takings are checked.[2][3]

Semantic evolution

The ration of a slave is the sense in the younger Seneca and Martial, and in the Digest a son's daily allowance.[2][4] Juvenal uses it for an account book, and in the plural diurna named the official daily record of events at Rome, which Tacitus says was read throughout the provinces.[2][4][3]

In Late Latin the plural meant daily needs in Arnobius, and diurnīs “by day” is set against noctibus in Caelius Aurelianus;[4][3] Wiktionary dates the sense “day” to the 4th century.[1] In Ecclesiastical Latin it is a Book of Hours.[5]

Timeline

  • c. 67–c. 127 AD – Juvenal uses it of an account book.[2][6]
  • 98–115 AD – Tacitus mentions the diurna populi Romani read in the provinces.[2][6]
  • 297–310 AD – Arnobius uses the plural for daily needs.[4][3][6]
  • 5th century AD – Caelius Aurelianus uses diurnīs for “by day”.[4][3][6]

Meanings

Noun

  1. A daily ration or allowance.[2][4]
  2. A daybook, account book; a day-to-day record of events.[2][3]
  3. (plural) The official daily gazette of Rome, the diurna populi Rōmānī.[2][4]
  4. (Late Latin, plural) Daily needs.[4][3]
  5. (Late Latin) Day, daytime.[1][4]
  6. (Ecclesiastical Latin) A Book of Hours.[5]

Word family

  • diurnarius

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e f g Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
  4. ^ a b c d e f g h i Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  5. ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  6. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de

Descendants

Cite this entry

“Diurnum.” Etymologically, 23 Oct. 2026, etymologically.com/la/diurnum. Accessed 23 Oct. 2026.

Last edited on . ·