osteoarthritis

noun

🔊/ˌɒstiəʊɑːˈθraɪtɪs/

🔊/ˌɑːstiəʊɑːrˈθraɪtɪs/

[uncountable] (medical医学)

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a disease that causes painful swelling (= the condition of being larger or rounder than normal) and permanent damage in the joints of the body, especially the hips, knees and thumbs骨关节炎；骨性关节炎