Definition of “arthritis” - English Dictionary

“arthritis” in American English

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arthritisnoun [ U ]

us /ɑrˈθrɑɪ·t̬əs/

a disease in which a person’s joints become swollen, and in which there is some loss in the ability to move them without pain

arthritic
adjective us /ɑrˈθrɪt̬·ɪk/

an arthritic knee

(Definition of “arthritis” from the Cambridge Academic Content Dictionary © Cambridge University Press)