commission dayglossary / COMMISSION DAY commission day. English law. The opening day of the assizes. • On this day the commission that authorizes the judge to act is publicly read. — Also written commission-day. 词条贡献者 译者玉晶,毕业于世界顶级翻译学院,擅长翻译各种与风险投资相关的法律文件。