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Medical Definition of Dysdiadochokinesis
1. Inability to perform rapid alternating movements. One of the clinical manifestations of cerebellar dysfunction. See: dysdiadochokinesia. Compare: diadochokinesia. Synonym: adiadochocinesia, adiadochocinesis, dysdiadochokinesis. Origin: G. A-priv. + diadochos, successive, + kinesis, movement (05 Mar 2000)