Definitions for "Akinetic"
Referring to absence or poverty of voluntary movement; loss of the ability to move all or part of the body.
rigid syndrome: A syndrome, or collection of systems, consisting of lack of movement ( akinesia) or reduced movements ( hypokinesia), slow movements ( bradykinesia), and stiffness or rigidity (involuntary resistance to movement). The rigidity is of a type called cogwheel rigidity.