| the normal ability to perform rapidly alternating muscular movements, as flexion and extension. |
, di⋅ad⋅oko⋅ki⋅ne⋅sia, di⋅ad⋅o⋅ko⋅ki⋅ne⋅sis. diadochokinesia di·ad·o·cho·ki·ne·sia (dī-ād'ə-kō-kĭ-nē'zhə, -kī-) or di·ad·o·cho·ki·ne·sis (-sĭs)
n.
The normal power of alternately bringing a limb into opposite positions, as flexion and extension or pronation and supination.