qualified domestic trustglossary / qualified domestic trust A trust for a noncitizen spouse qualifying for the marital deduction. 26 USCA § 2056(d). — Abbr. QDOT. See marital deduction under DEDUCTION. Cf. QTIP trust. 词条贡献者 双语律师蓉婧,国内知名法学院民商法专业,擅长翻译各类与数据隐私及安全相关的法律文件。