add on clauseglossary / ADD-ON CLAUSE add-on clause. An installment-contract provision that converts earlier purchases into security for new purchases. [Cases: Secured Transactions 114, 146. C.J.S. Secured Transactions §§ 10, 83, 103–105.] 词条贡献者 法律翻译郭敏,毕业于欧洲顶尖的高级翻译学院,擅长翻译涉及互动娱乐领域的法律文件。