Etymologically

meridies

Etymology and origin of the Latin word meridies

Confidence
Established
Formation
Compound
First attested
Law of the Twelve Tables
Ultimate origin
Latin (medius,diēs)
Etymology tree
inherited borrowed derived
Latin meridies
Latin meridianus
English meridian

Pronunciation

  • IPA (Classical): [mɛˈriː.di.eːs][1]
  • IPA (Ecclesiastical): [meˈriː.di.es][1]

Forms

merīdiēs m (genitive merīdiēī); fifth declension[1]

Etymology

It is a back-formation from the adverb ⟨merīdiē⟩ “at noon”, by dissimilation from ⟨*medī-diē⟩, the locative of medius “middle” and diēs “day”.[2][1][3] The sense “south” comes from the sun's position at noon.[1] Isidore explains it as ⟨medīdiēs⟩, or from ⟨merum⟩ “pure”, since the sky is then purest.[4]

Earliest recorded meaning

Köbler's first source is the Law of the Twelve Tables, about 450 BC.[3] The OLD's earliest citation for noon is from Terence.[2]

Semantic evolution

It meant midday, noon, as in Terence, and in Cato the position of the sun at noon, the south.[2] Döderlein explains that merīdiēs is noon as a point of time between forenoon and afternoon, while medius diēs is the middle of the day as a span.[5]

In Ecclesiastical Latin it meant midday, noon, south, and per merīdiem at noon.[6] British Medieval Latin used merīdiēs noctis for midnight.[7] It survives in Italian meriggio, and English uses ante merīdiem and post merīdiem abbreviated English a.m. and English p.m..[1][8]

Timeline

  • c. 450 BC – The Twelve Tables use it.[3]
  • 234–149 BC – Cato uses it of the south.[2][3]
  • 190–159 BC – Terence uses it of noon.[2][3]
  • 1660s – English p.m. is recorded.[8]

Meanings

Noun

  1. Midday, noon.[2]
  2. The south.[2]

Word family

  • merīdiālis
  • merīdiānus
  • merīdiōnālis
  • meridionarius
  • prōmerīdiē
  • antemerīdiem
  • merīdiō

Usage notes

Döderlein distinguishes it from medius diēs.[5]

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  4. ^ Isidore of Seville, Etymologiarum sive Originum libri XX, ed. W. M. Lindsay (Oxford, 1911).
  5. ^ a b Döderlein, Ludwig (1874), Döderlein’s Hand-book of Latin Synonymes, tr. H. H. Arnold, Andover: W. F. Draper
  6. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  7. ^ Latham, R. E., D. R. Howlett, R. K. Ashdowne, et al. (1975–2013), Dictionary of Medieval Latin from British Sources, London: British Academy / Oxford University Press
  8. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com

Derived terms

Cite this entry

“Meridies.” Etymologically, 16 Oct. 2026, etymologically.com/la/meridies. Accessed 16 Oct. 2026.

Last edited on . ·