osteoarthritis

American  

[os-tee-oh-ahr-thrahy-tis] / ˌɒs ti oʊ ɑrˈθraɪ tɪs /

noun

Pathology.

1. the most common form of arthritis, usually occurring after middle age, marked by chronic breakdown of cartilage in the joints leading to pain, stiffness, and swelling.

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osteoarthritis British  

/ ˌɒstɪəʊɑːˈθrɪtɪk, ˌɒstɪəʊɑːˈθraɪtɪs /

noun

1. Also called: degenerative joint disease.  chronic inflammation of the joints, esp those that bear weight, with pain and stiffness

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osteoarthritis Scientific  

/ ŏs′tē-ō-är-thrī′tĭs /

1. A form of arthritis, occurring mainly in older people, that is characterized by chronic degeneration of the cartilage of the joints.

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Other Word Forms

• osteoarthritic
  adjective

Etymology

Origin of osteoarthritis

First recorded in 1875–80; osteo- + arthritis

Example Sentences

They also showed greater progression of osteoarthritis and were more likely to need additional knee surgery compared to those who did not receive the actual procedure.

From Science Daily • May 6, 2026

Exercise is widely recommended as a key part of treatment, but current guidelines often lack clear advice on which specific types work best for knee osteoarthritis.

From Science Daily • Apr. 30, 2026

Despite these limitations, the study offers one of the most thorough and up-to-date evaluations of exercise for knee osteoarthritis.

From Science Daily • Apr. 30, 2026

These medications have reshaped how obesity and the overweight are treated and opened the door to a new scientific field that’s assessing GLP-1s for everything from osteoarthritis to alcohol addiction.

From MarketWatch • Apr. 8, 2026

One form of this, commonly seen in old men, called osteoarthritis, is often confined to the hip joint, and often produces considerable deformity.

From Psychotherapy by Walsh, James J. (James Joseph)