C1 noun ˌmɑːr.dʒɪ.nəl.aɪˈzeɪ.ʃən
marginalization
周縁化
Meaning
The treatment of a person, group, or concept as insignificant or peripheral.
Example
Economic policies should address the marginalization of the poor.
経済政策は貧困層の周縁化に対処すべきです。