1. A permanent separation or division that cannot be undone or repaired
The irreversible split between the two parties ended any hope of reconciliation.
A ruptura irreversível entre os dois partidos encerrou qualquer esperança de reconciliação.
2. A definitive break in a relationship, organization, or physical structure
The band's irreversible split was announced after years of internal conflicts.
A separação irreversível da banda foi anunciada após anos de conflitos internos.