commercium

From con- (“together, with”) + merx (“merchandise”) or merces (“pay”) + -ium.

Pronunciation

• (Classical Latin) IPA^(key): /komˈmer.ki.um/, [kɔmˈmɛrkiʊ̃ˑ]
• (modern Italianate Ecclesiastical) IPA^(key): /komˈmer.t͡ʃi.um/, [komˈmɛrt͡ʃium]

Noun

commercium n (genitive commerciī or commercī); second declension

1. Trade, traffic, commerce, exchange. [ synonyms ▲]

   Synonyms: mercātūra, mercātus

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. [ synonym ▲]

   Synonym: merx

5. (metonymically) A place of trade; marketplace. [ synonym ▲]

   Synonym: forum

Declension

Second-declension noun (neuter).

Case	Singular	Plural
Nominative	commercium	commercia
Genitive	commerciī commercī1	commerciōrum
Dative	commerciō	commerciīs
Accusative	commercium	commercia
Ablative	commerciō	commerciīs
Vocative	commercium	commercia

¹Found in older Latin (until the Augustan Age).