arthritis

noun

ar·​thri·​tis är-ˈthrī-təs How to pronounce arthritis (audio)
plural arthritides är-ˈthri-tə-ˌdēz How to pronounce arthritis (audio)
: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Key Takeaways Turmeric is a flavorful spice that contains natural painkillers, such as curcumin, which has been used to manage arthritis, fibromyalgia, and muscle and nerve pain. Lana Barhum, Verywell Health, 25 Feb. 2026 Wezlana is priced about 81% lower than Stelara, a treatment for psoriasis, psoriatic arthritis and Crohn’s disease that can exceed $165,000 per year. Amy Sue Harper, The Orlando Sentinel, 22 Feb. 2026 Shoppers who fluctuate between sizes, dread sitting in rigid denim, have arthritis, and are in the early stages of pregnancy also give the jeans a thumbs-up for their flexible fit, breathable fabric, and easy pull-on design. Mariana Best, Better Homes & Gardens, 21 Feb. 2026 Senior pups, large breeds and dogs with hip dysplasia or arthritis can benefit from structured foam that doesn’t collapse. Kasey Caminiti, USA Today, 19 Feb. 2026 See All Example Sentences for arthritis

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

Time Traveler
The first known use of arthritis was in 1543

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Cite this Entry

“Arthritis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/arthritis. Accessed 5 Mar. 2026.

Kids Definition

arthritis

noun
ar·​thri·​tis är-ˈthrīt-əs How to pronounce arthritis (audio)
: inflammation of the joints
arthritic
-ˈthrit-ik
adjective or noun

Medical Definition

arthritis

noun
ar·​thri·​tis är-ˈthrīt-əs How to pronounce arthritis (audio)
plural arthritides -ˈthrit-ə-ˌdēz How to pronounce arthritis (audio)
: inflammation of joints due to infectious, metabolic, or constitutional causes
also : a specific arthritic condition (as gouty arthritis or psoriatic arthritis)

More from Merriam-Webster on arthritis

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