internal rate of returnglossary / internal rate of return Accounting. A discounted-cash-flow method of evaluating a long-term project, used to determine the actual return on an investment. — Abbr. IRR. 词条贡献者 双语律师Jason,国内知名法学院国际贸易专业,擅长翻译各类与出口管制、经济制裁及海关相关的法律文件。