itemized deductionglossary / itemized deduction An expense (such as a medical expense, home-mortgage interest, or a charitable contribution) that can be subtracted from adjusted gross income to determine taxable income. 词条贡献者 译员何巍,毕业于欧洲一流的高级翻译学院,专注翻译各种与生命科学有关的法律文件。