adiadokokinesis

noun

adi·​a·​do·​ko·​ki·​ne·​sis

variants or adiadochokinesis

ˌad-ē-ˌad-ə-ˌkō-kə-ˈnē-səs  ə-ˌdī-ə-ˌdō-(ˌ)kō- 

-kī-ˈnē-

plural adiadokokineses -ˌsēz 

: inability to make movements exhibiting a rapid change of motion (as in quickly rotating the wrist one way and then the other) due to cerebellar dysfunction compare dysdiadochokinesia