fideicommissary heirglossary / fideicommissary heir (fI-dee-I-kom-i-sair-ee).Roman & civil law A beneficiary of property who succeeds the direct (original) heir. See FIDEICOMMISSUM. 词条贡献者 资深译员Walker,毕业于亚洲一流的高级翻译学院,擅长翻译各类与尽职调查相关的法律文件。