abnormal tone of any tissue.
- dys·ton·ic [dis-ton-ik], /dɪsˈtɒn ɪk/, adjective
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British Dictionary definitions for dystonia
a neurological disorder, caused by disease of the basal ganglia, in which the muscles of the trunk, shoulders, and neck go into spasm, so that the head and limbs are held in unnatural positions
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012