rheumatoid arthritis
noun/ˌruːmətɔɪd ɑːˈθraɪtɪs/
/ˌruːmətɔɪd ɑːrˈθraɪtɪs/
[uncountable] (medical)- a disease that gets worse over a period of time and causes painful swelling (= the condition of being larger than normal) and permanent damage in the joints of the body, especially the fingers, wrists, feet and ankles
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rheumatoid arthritis