Definition of Parkinson's disease noun from the Oxford Advanced American Dictionary

 

Parkinson's disease

 noun
noun
NAmE//ˈpɑrkənsnz dɪˌziz//
 
(also Parkinsonism
NAmE//ˈpɑrkənsəˌnɪzəm//
 
)
[uncountable]
 
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a disease of the nervous system that gets worse over a period of time and causes the muscles to become weak and the arms and legs to shake
See the Oxford Advanced Learner's Dictionary entry: Parkinson's disease