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Latin numbers (edit)
 ←  3 IV
5  → 
    Cardinal: quattuor
    Ordinal: quārtus
    Adverbial: quater
    Multiplier: quadruplex, quadruplus
    Distributive: quadrīnī, quaternī
    Collective: quaterniō
    Fractional: quadrāns, teruncius

Alternative forms[edit]


From Proto-Italic *kʷettwōr (*t duplicated preceding *-w-), from Proto-Indo-European *kʷetwṓr, neuter plural of *kʷetwóres. Cognates include Sanskrit चतुर् (catur), Old Armenian չորք (čʿorkʿ), Ancient Greek τέσσαρες (téssares), and Old English fēower (English four).

The change of *e to a is unexplained; the expected form would be *quettuor.



quattuor (indeclinable)

  1. four; 4
    • 43 BCEc. 17 CE, Ovid, Metamorphoses 1.116–118:
      Iuppiter antiqui contraxit tempora veris perque hiemes aestusque et inaequalis autumnos et breve ver spatiis exegit quattuor annum.
      Venerable Jove brought together the time of spring and through winter, summer, variable autumn, and brief spring completed the year in four seasons.
    • 405 CE, Jerome, Vulgate Leviticus.11.23:
      quicquid autem ex volucribus quattuor tantum habet pedes execrabile erit vobis
      But all other flying creeping things, which have four feet, shall be an abomination unto you.

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See also[edit]


  1. 1.0 1.1 1.2 Rubattu, Antoninu (2006) Dizionario universale della lingua di Sardegna, "quattro"
  • quattuor”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • quattuor”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • quattuor in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette
  • Carl Meißner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • four successive days: quattuor dies continui
    • to hold out for four months: obsidionem quattuor menses sustinere