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Joanne,亚洲顶尖法学院国际贸易专业,擅长翻译涉及媒体、体育和娱乐领域的法律文件。