osteoarthritis

noun

os·​te·​o·​ar·​thri·​tis ˌä-stē-ō-är-ˈthrī-təs 

: a common form of arthritis typically with onset during middle or old age that is characterized by progressive degenerative changes in the cartilage of one or more joints (as of the knees, hips, and hands) accompanied by thickening and overgrowth of adjacent bone and that is marked symptomatically chiefly by stiffness, swelling, pain, deformation of joints, and loss of range of motion

—abbreviation OA compare rheumatoid arthritis

osteoarthritic

ˌä-stē-ō-är-ˈthri-tik 

adjective

Examples of osteoarthritis in a Sentence

Recent Examples on the Web

Obesity increases the risk of developing conditions such as diabetes, heart disease, osteoarthritis and some cancers. —Joshua P. Cohen, Forbes.com, 5 Aug. 2025

These changes can also contribute to low-level inflammation that may raise the risk for health problems like heart disease, osteoarthritis and even some cancers. —Marygrace Taylor, Flow Space, 18 July 2025

Address medical issues, such as osteoarthritis, that may inhibit a horse's ability to lie down comfortably. —Lucy Notarantonio, MSNBC Newsweek, 20 June 2025

Being overweight or having obesity can be a factor in soft tissue damage and osteoarthritis. —Anna Giorgi, Verywell Health, 6 June 2025

Word History

Etymology

New Latin

First Known Use

1878, in the meaning defined above

Rhymes for osteoarthritis

• diverticulitis
• epididymitis
• periodontitis
• polymyositis
• pyelonephritis
• tenosynovitis
• adenitis
• arteritis
• blepharitis
• cervicitis
• cholangitis
• choroiditis

Kids Definition

osteoarthritis

noun

os·​teo·​ar·​thri·​tis

ˌäs-tē-ō-är-ˈthrīt-əs

: arthritis marked by the breakdown of cartilage and bone of joints

Medical Definition

osteoarthritis

noun

os·​teo·​ar·​thri·​tis ˌäs-tē-ō-är-ˈthrīt-əs 

plural osteoarthritides -ˈthrit-ə-ˌdēz 

: a common form of arthritis typically with onset during middle or old age that is characterized by progressive degenerative changes in the cartilage of one or more joints (as of the knees, hips, and hands) accompanied by thickening and overgrowth of adjacent bone and that is marked symptomatically chiefly by stiffness, swelling, pain, deformation of joints, and loss of range of motion

—abbreviation OA

called also degenerative arthritis, degenerative joint disease, hypertrophic arthritis

compare rheumatoid arthritis

osteoarthritic

-ˈthrit-ik 

adjective

Treatment for hand and finger osteoarthritis has the same goals as treatment for any osteoarthritic joint: pain reduction, mobility maintenance and minimization of disability.

—Paul G. Donohue, The Springfield (Massachusetts) Union-News