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.
Julie Espinoza, 60, uses medical marijuana in the form of edibles and tinctures to manage her pain from arthritis. Miriam Fauzia, Dallas Morning News, 14 Feb. 2026 Still, Lang says joint pain is often attributed to developing arthritis or Lyme disease, which can delay getting the necessart treatment for perimenopause symptoms. Jocelyn Solis-Moreira, Flow Space, 11 Feb. 2026 There are also cool maps on the local prevalence of certain health conditions, from arthritis and asthma to cancer and high cholesterol to diabetes and depression to — not kidding here — where people have lost all their teeth. Teri Sforza, Oc Register, 11 Feb. 2026 Jefferson County Sheriff's Office Sheryl Seitz suffered from arthritis, was legally blind and struggled with mobility, according to case documents. Logan Smith, CBS News, 8 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

Browse Nearby Words

Cite this Entry

“Arthritis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/arthritis. Accessed 18 Feb. 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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