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See also: Portus




  1. conditional of porti



From Proto-Italic *portus, from Proto-Indo-European *pértus (crossing). Cognates include Northern Kurdish pir (bridge), Russian пере́ть (perétʹ, push forward), Old Norse fjǫrðr (firth, fjord) and Old English ford (English ford). See also porta.



portus m (genitive portūs); fourth declension

  1. harbour, port
  2. haven, refuge, asylum, retreat
  3. warehouse


Fourth-declension noun.

Case Singular Plural
Nominative portus portūs
Genitive portūs portuum
Dative portuī portibus
Accusative portum portūs
Ablative portū portibus
Vocative portus portūs

Derived terms[edit]



  • portus in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • portus in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • portus in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
  • portus in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette
  • Carl Meißner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • to take refuge in philosophy: in portum philosophiae confugere
    • the ships sail from the harbour: naves ex portu solvunt
    • the ships sail out on a fair wind: ventum (tempestatem) nancti idoneum ex portu exeunt
    • to be unable to land: portu, terra prohiberi (B. C. 3. 15)
    • to keep the coast and harbours in a state of blockade: litora ac portus custodia clausos tenere
  • portus in Richard Stillwell et al., editor (1976) The Princeton Encyclopedia of Classical Sites, Princeton, N.J.: Princeton University Press
  • De Vaan, Michiel (2008) Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7)‎[2], Leiden, Boston: Brill, →ISBN