pactionglossary / PACTION paction (pak-sh[schwa]n).1. PACTIO.2. Int’l law. An agreement between two nations to be performed by a single act. 词条贡献者 译员Joanne,亚洲顶尖法学院国际贸易专业,专注翻译各种与复杂国际贸易有关的法律文件。