rule of decisionglossary / RULE OF DECISION rule of decision. A rule, statute, body of law, or prior decision that provides the basis for deciding or adjudicating a case. [Cases: Courts 88. C.J.S. Courts § 139; Trade-Marks, Trade-Names, and Unfair Competition § 187.] 词条贡献者 法律翻译Carl,知名法学院法律英语专业,专注翻译各类与复杂商业纠纷有关的法律文件。