ten·​di·​ni·​tis ˌten-də-ˈnī-təs How to pronounce tendinitis (audio)
variants or tendonitis
: inflammation of a tendon typically associated with acute injury and usually accompanied by pain and swelling
Tendinitis in his right shoulder forced him to the sideline only a few plays into the game.Herm Weiskopf

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Tendinitis is often seen in active, healthy people who do something that requires repeated motion, including golfers and tennis players (especially those with improper form), carpenters, and violinists. It's usually treated by keeping the joint from moving, by means of a splint, cast, or bandage. If not dealt with in time, tendinitis can turn into the more serious tendinosis, or tendon degeneration.

Example Sentences

She was diagnosed with tendinitis of the elbow. I have tendinitis in my knee.
Recent Examples on the Web Huntley, who is 2-2 in the four starts he's made in Jackson's absence, has been dealing with tendinitis in his right shoulder and a wrist injury. Dave Clark, The Enquirer, 16 Jan. 2023 But Huntley is questionable with shoulder tendinitis, setting up undrafted rookie Anthony Brown Jr. as the potential starter in Cincinnati. Chris Bumbaca, USA TODAY, 8 Jan. 2023 In three matches in Toronto and Cincinnati knee tendinitis kept her from moving well. Matthew Futterman, New York Times, 2 Sep. 2022 For example, someone might get tendinitis of the knee because their calf muscles are so tight. Cari Shane, Discover Magazine, 19 Mar. 2022 Desmond Cambridge, who sat out Thursday's game with tendinitis in his knee, was back in the starting lineup but managed just two points and three assists. Michelle Gardner, The Arizona Republic, 13 Nov. 2022 Anti-inflammatory medications and NSAIDs are also often used to reduce inflammation associated with tendinitis. Amber Smith, Discover Magazine, 21 Sep. 2022 Garcia has a significant leg length discrepancy, and Achilles tendinitis has been his particular nemesis. Amby Burfoot, Outside Online, 10 Jan. 2020 Stafford, 34, is recovering from a spinal cord contusion and has dealt with concussions and tendinitis this season. Los Angeles Times, 6 Dec. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tendinitis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History


New Latin tendin-, tendōn-, taken as stems of Medieval Latin tendō tendon + -itis

First Known Use

1842, in the meaning defined above

Time Traveler
The first known use of tendinitis was in 1842

Dictionary Entries Near tendinitis

Cite this Entry

“Tendinitis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tendinitis. Accessed 4 Feb. 2023.

Medical Definition


variants or tendonitis
: inflammation of a tendon typically associated with acute injury and usually accompanied by pain and swelling

More from Merriam-Webster on tendinitis

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