actio pro socioglossary / actio pro socio (ak-shee-oh proh soh-shee-oh).Roman law. An action brought by one partner against another. Pl. actiones pro socio. See SOCIETAS. 词条贡献者 译员Clara,毕业于国内知名法学院,擅长翻译有关建筑领域的法律文件。