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 译员蓉婧,欧洲知名商学院国际金融专业,专注翻译各种与美国证券法律有关的法律文件。