fiduciary contractglossary / FIDUCIARY CONTRACT fiduciary contract. Hist. An agreement by which one party delivers something to another on condition that the second party will return the thing to the first. 词条贡献者 资深译员Fang,毕业于美国一流的高级翻译学院,专注翻译各种与主权及机构投资有关的法律文件。