commerce /kəˈmə:s/ n. ［u］ 商业，贸易：carry on commerce with…与…通商； foreign commerce 对外贸易；open commerce with neighbouring countries 与邻国通商； air(sea ) commerce 航空通商（海上贸易）；expand world commerce 扩大世界贸易；a chamber of commerce 商会； school of commerce 商业学校