incoordination of muscular movement

from The Collaborative International Dictionary of English v.0.48

Incoordination \In`co*["o]r`di*na"tion\, n.
   Lack of co["o]rdination; lack of harmonious adjustment or
   action.
   [1913 Webster]

   {Inco["o]rdination of muscular movement} (Physiol.),
      irregularity in movements resulting from inharmonious
      action of the muscles in consequence of loss of voluntary
      control over them.
      [1913 Webster]