active dutyglossary / active duty active duty.1. Military law. The full-time status of being in any of the U.S. armed forces.2. See positive duty under DUTY(1). 词条贡献者 资深译员Barbara,毕业于国内顶尖的高级翻译学院,擅长翻译各类与兼并收购相关的法律文件。