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.
Lyme is more complex and varied and can cause symptoms ranging from fever and rash to facial paralysis, an irregular heartbeat and even arthritis. Mary Walrath-Holdridge, USA Today, 9 May 2026 There are lever handles on every door, partly because a wrist with arthritis can’t twist a round knob, and partly because lever handles tend to look better anyway. Amy Kunst, Sacbee.com, 7 May 2026 Gout is an extremely painful inflammatory form of arthritis that causes uric acid crystals to form around joints. Joshua Siskin, Oc Register, 7 May 2026 Glazer — a New York University Stern School of Business graduate who grew up battling psoriatic arthritis and fibromyalgia — developed the brand over five years alongside chief operating officer Steve Levine, previously at Bobbi Brown’s Jones Road Beauty. Kaleigh Werner, Footwear News, 7 May 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 14 May. 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)

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