From irredent(ist) + -ism.
Variant of irredentist
- Historical any member of an Italian political party, organized in 1878, seeking to recover for Italy adjacent regions inhabited largely by Italians but under foreign control
- any person who advocates a similar policy about territory formerly a part of that person's country
Origin of irredentistItalian irredentista ; from (Italia) irredenta, unredeemed (Italy) ; from Classical Latin in-, not + redemptus: see redemption