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dies

Etymology and origin of the Latin word dies

History

Pronunciation

  • IPA (Classical): [ˈdi.eːs][1]
  • IPA (Ecclesiastical): [ˈdiː.es][1]

Forms

diēs m or f (genitive diēī); fifth declension[1]

Etymology

It goes back to Proto-Italic *diē-, built on the accusative *dijēm (Latin diem), from Proto-Indo-European *dyḗws (“sky, god of the sky”).[2][1] A new stem *dijē- was made from that accusative and became one of the sources of the fifth declension.[2] The meaning “day” comes from the time when the sky is bright, and the older sense survives in the god's name Diespiter, beside Iuppiter.[2][3]

Within Italic, compare Oscan zicolom (“day”), from *djē-kelo- “little day”.[2][3] Further cognates are Ancient Greek Ζεύς (Zeús) and Sanskrit द्यौः (dyáuḥ, “sky”);[4] English day is not related.[1]

Earliest recorded meaning

It is found in the Twelve Tables and in Livius Andronicus.[2][5] In Plautus it means the daytime, as in “I spend the day in the forum from morning till night”.[4]

Semantic evolution

From the daylight period it extended to the full day of twenty-four hours, reckoned from midnight to midnight, to daylight itself and the open sky, and to the weather.[4] When it meant a set day, a date, an appointed term or the date of a letter, it was often feminine, while in the plural it was always masculine.[4][6] By extension it meant the day of a person's death, a lifetime, and the passing of time, as in Terence's line that “time takes away grief”.[4] Personified, Dies was a deity.[4][7]

Horace's carpe diem “seize the day” uses the sense of the present day.[4] Medieval writers used it also for a feast day or anniversary, a day's work and a measure of land.[8]

Timeline

  • c. 450 BC – It appears in the Twelve Tables.[2][5]
  • c. 250–184 BC – Plautus uses it for daytime and for an appointed day.[4][5]
  • 190–159 BC – Terence uses it for the passing of time.[4][5]
  • 81–43 BC – Cicero uses it for the date of a letter.[4][5]
  • 65–8 BC – Horace writes carpe diem.[4][5]
  • Middle Ages – It means a feast day, a day's work and a measure of land.[8]

Meanings

Noun

  1. The time from sunrise to sunset, daytime.[4][9]
  2. Daylight; the open sky; the weather.[4]
  3. A day of twenty-four hours.[4][7]
  4. A particular day, date; the date of a letter.[4]
  5. A day appointed for business or payment, a term.[4]
  6. The day of death; one's lifetime.[4]
  7. The passing of time.[4]
  8. (Medieval Latin) A feast day, anniversary; a day's work; a measure of land.[8]

Word family

  • bīduānus
  • bīduum
  • diārium
  • diātim
  • diēcula
  • diurnus
  • quadrīduum
  • trīduum
  • Diālis
  • hodiē
  • merīdiēs
  • cottīdiē
  • prīdiē
  • postrīdiē
  • diū
  • nū̆diū̆s
  • biduus
  • Iūpiter
  • English dismal
  • English diary

Usage notes

In the singular it is masculine or feminine, the feminine being usual for an appointed day or a date; in the plural it is masculine.[4][6] Compounds such as hodie “today”, pridie “the day before” and postridie “the day after” contain it.[2]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  3. ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ a b c d e f g h i j k l m n o p q r s Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  5. ^ a b c d e f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  7. ^ a b Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  8. ^ a b c Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  9. ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
Cite this entry

“Dies.” Etymologically, 10 Oct. 2026, etymologically.com/la/dies. Accessed 10 Oct. 2026.

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