conversion/kənˋvɝʒən; kənˈvɜːʃ$n/n [C,U] 1 when you change something from one system or purpose to another 转变﹔转换﹔转化: +into/of/to the conversion of waste into energy 把废弃物变成能源2 when someone changes to a different religion or belief 宗教[信仰]的改变﹔皈依: +to/from her conversion to Catholicism 她改信天主教