trialoguenoun [ C ]
/ˈtraɪ.ə.lɒɡ//ˈtraɪ.ə.lɑːɡ/also trilogue, /ˈtraɪ.lɒɡ//ˈtraɪ.lɑːɡ/a conversation or discussion between three people or groups:
The policy makers involved in the trialogue were unable to reach agreement.
trilogue discussions on EU data protection