Definition of trade unionism in US English:

trade unionism

(British trades unionism)

noun

  • The policies and practices of labor unions.

    ‘the rapid growth of workplace trade unionism’
    ‘they knew how to recruit workers to trade unionism’

Pronunciation

trade unionism

/trād ˈyo͞onyəˌnizəm//treɪd ˈjunjəˌnɪzəm/