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Alternative forms[edit]


From con (together, with) + merx (merchandise) or merces (pay).



commercium n (genitive commerciī); second declension

  1. Trade, traffic, commerce, exchange.
  2. (by extension) Intercourse, communication, correspondence, fellowship.
  3. (metonymically) The right to trade as a merchant, mercantile right.
  4. (metonymically) An article of trade; merchandise, wares.
  5. (metonymically) A place of trade; marketplace.


Second declension.

Case Singular Plural
nominative commercium commercia
genitive commerciī commerciōrum
dative commerciō commerciīs
accusative commercium commercia
ablative commerciō commerciīs
vocative commercium commercia


Derived terms[edit]

Related terms[edit]



  • commercium in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • commercium in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • du Cange, Charles (1883), “commercium”, in G. A. Louis Henschel, Pierre Carpentier, Léopold Favre, editors, Glossarium Mediæ et Infimæ Latinitatis (in Latin), Niort: L. Favre
  • commercium” in Félix Gaffiot’s Dictionnaire Illustré Latin-Français, Hachette (1934)
  • Carl Meissner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • intercourse of speech: commercium linguae
    • correspondence: epistularum commercium
    • interchange of ideas; conversation: commercium loquendi et audiendi
  • commercium in Harry Thurston Peck, editor (1898) Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
  • commercium in William Smith et al., editor (1890) A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin