arthritis

noun

ar·​thri·​tis är-ˈthrī-təs 

plural arthritides är-ˈthri-tə-ˌdēz 

: inflammation of joints due to infectious, metabolic, or constitutional causes

also : a specific arthritic condition

Examples of arthritis in a Sentence

Recent Examples on the Web

Like people, joints naturally degenerate over time, and arthritis is particularly common in older pets. —Alice Gibbs, MSNBC Newsweek, 15 Sep. 2025

For example, pain that worsens with activity may be a sign of injury, whereas pain that worsens at night is associated with certain types of arthritis. —Lindsay Curtis, Health, 11 Sep. 2025

Fights Inflammation Inflammation is a part of the process of many different diseases, including heart disease, arthritis, autoimmune disorders, and cancer. —Heidi Moawad, Verywell Health, 11 Sep. 2025

When arthritis pain flares up, the area around the offending joint becomes inflamed and slightly acidic. —New Atlas, 10 Sep. 2025

Word History

Etymology

borrowed from Late Latin arthrītis "pain in the joints," borrowed from Greek arthrītid-, arthrîtis "of the joints" (arthrîtis nósos "disease of the joints"), (as a noun) "gout," from árthron "joint, articulation" + -ītis -itis — more at arthro-

First Known Use

1543, in the meaning defined above

Phrases Containing arthritis

• anti-arthritis
• reactive arthritis
• rheumatoid arthritis

Rhymes for arthritis

• bronchitis
• bursitis
• detritus
• gastritis
• glossitis
• mastitis
• metritis
• nephritis
• neuritis
• orchitis
• osteitis
• otitis

Kids Definition

arthritis

noun

ar·​thri·​tis är-ˈthrīt-əs 

: inflammation of the joints

arthritic

-ˈthrit-ik

adjective or noun

Medical Definition

arthritis

noun

ar·​thri·​tis är-ˈthrīt-əs 

plural arthritides -ˈthrit-ə-ˌdēz 

: inflammation of joints due to infectious, metabolic, or constitutional causes

also : a specific arthritic condition (as gouty arthritis or psoriatic arthritis)