unionization /ˌjuːnjənaɪˈzeɪʃən/

also unionisation

• 1. 

  N-UNCOUNT The unionization of workers or industries is the process of workers becoming members of unions. 加入工会

  例：

  Increasing unionization led to demands for higher wages and shorter hours.

  更多工人加入工会带来了对更高工资和更短工作时间的要求。