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 译者晓琳,法学硕士(国际争议解决方向),擅长翻译各种与复杂跨境争议相关的法律文件。