peri·​os·​ti·​tis ˌper-ē-ˌä-ˈstī-təs How to pronounce periostitis (audio)
: inflammation of the periosteum

Example Sentences

Recent Examples on the Web Scientists also found that infections, trauma, scurvy or rickets had triggered periostitis—chronic swelling and pain—to form in Waal’s arm bones. Isis Davis-marks, Smithsonian Magazine, 17 Mar. 2021

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'periostitis.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


New Latin

First Known Use

1825, in the meaning defined above

Time Traveler
The first known use of periostitis was in 1825

Dictionary Entries Near periostitis

Cite this Entry

“Periostitis.” Dictionary, Merriam-Webster, Accessed 1 Apr. 2023.

Medical Definition


peri·​os·​ti·​tis -ˌäs-ˈtīt-əs How to pronounce periostitis (audio)
: inflammation of the periosteum
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

What Did You Just Call Me?

  • brown chihuahua sitting on the floor with squinting eyes looking at the camera
  • Before we went to her house, Hannah told us her aunt was a flibbertigibbet.
True or False

Test your knowledge - and maybe learn something along the way.

Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?