dies Mercurii

Latin

Days of the week

Previous:	diēs Mārtis
Next:	diēs Iovis

Alternative forms

• Mercuriī diēs

Etymology

From diēs (“day”) and Mercuriī, genitive of Mercurius (“Mercury”). Latin calque of Ancient Greek ἡμέρα (hēméra, “day”) Ἑρμοῦ (Hermoû) ("of Hermes"). The association of the seven week days with the seven classical planets is first attested in the Anthologiarum by Vettius Valens, ca. AD 170 and was known to Cassius Dio by the early 3rd century.

Pronunciation

• (Classical Latin) IPA^(key): /ˈdi.eːs ˈmer.ku.riː/, [ˈd̪ieːs̠ ˈmɛrkʊriː]
• (modern Italianate Ecclesiastical) IPA^(key): /ˈdi.es ˈmer.ku.ri/, [ˈd̪iːes ˈmɛrkuri]
• The pronunciation Mercurī instead of regularized Mercuriī is the one regularly expected for BCE Classical Latin, but it is also reflected by Romance centuries later, and in light of this was likely in general use for naming this weekday.
• (Regularized) IPA^(key): /ˈdi.eːs merˈku.ri.iː/, [ˈd̪ieːs̠ mɛrˈkʊriː]
• (Regularized) IPA^(key): /ˈdi.es merˈku.ri.i/, [ˈd̪iːes merˈkuːriː]

Noun

diēs Mercuriī f (genitive diēī Mercuriī); fifth declension

1. Wednesday

Declension

Fifth-declension noun with an indeclinable portion.

Case	Singular	Plural
Nominative	diēs Mercuriī	diēs Mercuriī
Genitive	diēī Mercuriī	diērum Mercuriī
Dative	diēī Mercuriī	diēbus Mercuriī
Accusative	diem Mercuriī	diēs Mercuriī
Ablative	diē Mercuriī	diēbus Mercuriī
Vocative	diēs Mercuriī	diēs Mercuriī

Coordinate terms

• diēs hebdomadis
• diēs Dominicus, diēs Sōlis
• diēs Lūnae
• diēs Mārtis
• diēs Iovis
• diēs Veneris
• diēs Sabbatī, diēs Saturnī

Descendants

• Corsican: marcuri
• Eastern Romance:
  • Aromanian: Njercuri
  • Romanian: miercuri
• Emilian: mercordé
• Extremaduran: miércolis
• Franco-Provençal: demécro
• Italian: mercoledì
• Lombard: mercoldé
• Navarro-Aragonese:
  • Aragonese: miércols
• Neapolitan: miercurì

  Tarantino: mercrudìe

• Old French: mercredi
  • Champenois: mécurdi, mécueurdi, mieurdi
  • French: mercredi
    • Haitian Creole: mèkredi
    • Louisiana Creole: mékrédi, mèkrèdi, mærkrédi
  • Norman: Mêcrédi, mercrédi, méquerdi, Mekrëdi, mekrëdi
  • Walloon: mierkidi, dimiek
• Old Leonese:
  • Asturian: miércoles
• Old Occitan:
  • Catalan: dimecres
  • Occitan: dimècres
• Old Galician-Portuguese: mercores
  • Galician: mércores
• Old Spanish:
  • Ladino: mierkoles
  • Spanish: miércoles (see there for further descendants)
• Rhaeto-Romance:
  • Friulian: miercus, miercui
  • Ladin: mercol
  • Romansch: marculdi, marcurdi (Vallader)
• Sardinian: mélcuris, mércuis, mérculis, mércuris, mèrcuris
• Sicilian: mèrcuri, mièrcuri (dialectal)
• Venetan: mèrcore, mercoe, mercoli
• → Albanian: e mërkurë
• → Breton: dimerc’her
• → Cornish: de Merher
• → Proto-West Germanic: *Wōdanas dag (calque) (see there for further descendants)
• → Welsh: dydd Mercher (calque)