Definition of rheumatoid arthritis noun from the Oxford Advanced Learner's Dictionary

 

rheumatoid arthritis

 noun
noun
BrE BrE//ˌruːmətɔɪd ɑːˈθraɪtɪs//
 
; NAmE NAmE//ˌruːmətɔɪd ɑːrˈθraɪtɪs//
 
[uncountable](medical)
 
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a disease that gets worse over a period of time and causes painful swelling and permanent damage in the joints of the body, especially the fingers, wrists, feet and ankles
See the Oxford Advanced American Dictionary entry: rheumatoid arthritis