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tendinitis

American  
[ten-duh-nahy-tis] / ˌtɛn dəˈnaɪ tɪs /
Also tendonitis,

noun

Pathology.
  1. inflammation of a tendon.


tendinitis British  
/ ˌtɛndəˈnaɪtɪs /

noun

  1. inflammation of a tendon

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of tendinitis

1895–1900; < New Latin tendin- ( see tendinous) + -itis

Explanation

Tennis players who overexert themselves might experience pain and swelling in their elbows, a sign they could be dealing with tendinitis — inflammation of the connective fiber within their joints. Tendinitis is a condition where a tendon, the thick cord that connects muscle to bone, becomes inflamed due to overuse or injury. The word tendinitis comes from the Latin word tendo, meaning "stretch," and the suffix -itis, which indicates inflammation. This condition is common among athletes and people who perform repetitive motions, causing pain and swelling in the affected joint.

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

I have patellar tendinitis so a lot of it is work tending to that.

From The Wall Street Journal Aug. 10, 2026

And MRI scan Saturday showed tendinitis in Stewart’s right shoulder.

From Los Angeles Times Aug. 2, 2026

Tuchel confirmed Saka is ready to start after coming off the bench in the opening two matches because of a long-term Achilles tendinitis complaint.

From BBC Jun. 26, 2026

Lula was also given an injection in his right wrist to treat tendinitis in his thumb.

From Barron's Apr. 24, 2026

As in: On the top shelf of Mom and Dad’s closet in a silver safety box JB and I discovered that my dad has jumper’s knee, a.k.a. patellar tendinitis.

From "The Crossover" by Kwame Alexander

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