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Etymology 1[edit]

From Proto-Indo-European *mḗh₁n̥s ‎(moon, month), probably from Proto-Indo-European *meh₁- ‎(to measure), referring to the moon's phases as the measure of time. Cognate with Ancient Greek μήν ‎(mḗn), μήνη ‎(mḗnē), English month; Scots moneth ‎(month); North Frisian muunt ‎(month); Saterland Frisian Mound ‎(month), Dutch maand ‎(month); German Low German Maand, Monat ‎(month); German Monat ‎(month); Danish måned ‎(month); Swedish månad ‎(month); Icelandic mánuði ‎(month); Armenian ամիս ‎(amis); Old Irish ; Old Church Slavonic мѣсѧць ‎(měsęcĭ).



mēnsis m ‎(genitive mēnsis); third declension

  1. month

Third declension i-stem.

Case Singular Plural
nominative mēnsis mēnsēs
genitive mēnsis mēnsium
dative mēnsī mēnsibus
accusative mēnsem mēnsēs
ablative mēnse mēnsibus
vocative mēnsis mēnsēs
Derived terms[edit]
Related terms[edit]

Etymology 2[edit]

Inflected form of mēnsa ‎(table).




  1. dative plural of mēnsa
  2. ablative plural of mēnsa


  • mensis in Charlton T. Lewis & Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • mensis in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • MENSIS in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
  • mensis” in Félix Gaffiot (1934), Dictionnaire Illustré Latin-Français, Paris: Hachette.
  • Meissner, Carl; Auden, Henry William (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • to hold out for four months: obsidionem quattuor menses sustinere
    • (ambiguous) the intercalary year (month, day): annus (mensis, dies) intercalaris
  • mensis in Harry Thurston Peck, editor (1898) Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
  • mensis in William Smith et al., editor (1890) A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin