- a person who opposes official policy, especially that of an authoritarian state持不同政见者。
- in opposition to official policy持不同政见的：
the measure was supported by dissident Tories.
这项措施得到持不同政见的保守党党员的支持。
词源
mid 16th cent. （in the sense 'differing in opinion or character'）： from Latin dissident- 'sitting apart， disagreeing'， from dis- 'apart'+sedere 'sit'.