Pronunciation: ' tär-div-
Function: noun
Etymology: tardive tending toward late development (fr. French, feminine of tardif, from MF) + dyskinesia
Date: 1964
: a neurological disorder characterized by involuntary uncontrollable movements especially of the mouth, tongue, trunk, and limbs and occurring especially as a side effect of prolonged use of antipsychotic drugs (as phenothiazine)