dual criminality principleglossary / DUAL-CRIMINALITY PRINCIPLE dual-criminality principle. The rule prohibiting the international extradition of a fugitive unless the offense involves conduct that is criminal in both countries. [Cases: Extradition and Detainers 5.] 词条贡献者 译员Bernardine,毕业于英国顶尖的高级翻译学院,专注翻译各种与医疗保健及生命科学有关的法律文件。