hemiballismus
noun
hemi·bal·lis·mus
| \ ˌhem-i-ba-ˈliz-məs
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variants:
also hemiballism \ -ˈbal-iz-əm
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Medical Definition of hemiballismus
: violent uncontrollable movements of one lateral half of the body usually due to a lesion in the subthalamic nucleus of the contralateral side of the body