expromissioglossary / EXPROMISSIO expromissio (eks-pr[schwa]-mis[h]-ee-oh), n. Roman law. A type of novation by which a creditor accepts a new debtor in place of a former one, who is then released. 词条贡献者 双语律师William,国内知名法学院金融专业,擅长翻译各类与投资基金、投资顾问及金融衍生工具相关的法律文件。