par·kin·son·ism or Par·kin·son·ism (pärkĭn-sə-nĭz′əm)
1. A syndrome characterized by tremor, muscular rigidity, slowness of movement, and postural and balance abnormalities, caused by Parkinson's disease or other diseases or induced by trauma, infection, or a drug. Also called Parkinson's syndrome.
2. Parkinson's disease.
[From PARKINSON'S DISEASE.]
par′kin·soni·an (-sōnē-ən) adj.
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