dystonia noun.
[dɪs'tǝʊnɪǝ] E20.[from DYS- + TONE noun + -IA1.]Medicine. A state of abnormal muscle tone;
esp. a postural disorder marked by spasm of the trunk, neck, shoulders or limbs and due to disease of the basal ganglia of the brain.
■ dystonic adjective E20. [TahlilGaran] English Dictionary ▲