a neuromuscular disorder, characterized by involuntary movements of the face, mouth, etc., believed to be induced by long-term use of certain tranquilizers or dopamine
Origin:
tardive, developing late (< Fr, fem. of tardif, tardy) + dyskinesia
See tardive dyskinesia in American Heritage Dictionary 4
noun
A chronic disorder of the nervous system characterized by involuntary jerky movements of the face, tongue, jaws, trunk, and limbs, usually developing as a late side effect of prolonged treatment with antipsychotic drugs.