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- \
, ə-ˌdī-ə-ˌdō-(ˌ)kō-
, -kī-ˈnē- \
plural adiadokokineses\ -ˌsēz
\
\
Medical Definition of adiadokokinesis
: 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