tardive dyskinesiaPronunciation: /ˌtɑːdɪv ˌdɪskɪˈniːziə/Definition of tardive dyskinesia noun [mass noun] Medicine a neurological disorder characterized by involuntary movements of the face and jaw. Origin: 1960s: tardive from French tardif, tardive (see tardy)tardive dyskinesia in other Oxford dictionaries Definition of tardive dyskinesia in the US English dictionary