- a member of an Italian association that became prominent in 1878, advocating the redemption, or the incorporation into Italy, of certain neighboring regions (Italia irredenta ) having a primarily Italian population.
- a member of a party in any country advocating the acquisition of some region included in another country by reason of cultural, historical, ethnic, racial, or other ties.
- pertaining to or supporting such a party or its doctrine.
- a person who favours the acquisition of territory that once was part of his country or is considered to have been
- of, relating to, or advocating this belief
- a member of an Italian association prominent in 1878 that sought to recover for Italy certain neighbouring regions (Italia irredenta) with a predominantly Italian population that were under foreign control