indispensable instrumentglossary / indispensable instrument The formal written evidence of an interest in intangibles, so necessary to represent the intangible that the enjoyment, transfer, or enforcement of the intangible depends on possession of the instrument. 词条贡献者 双语律师郭敏,国际知名商学院金融专业,擅长翻译各类与金融衍生品与结构化产品相关的法律文件。