inflammation

noun

in·​flam·​ma·​tion ˌin-flə-ˈmā-shən How to pronounce inflammation (audio)
1
: a local response to cellular injury that is marked by capillary dilatation, leukocytic infiltration, redness, heat, and pain and that serves as a mechanism initiating the elimination of noxious agents and of damaged tissue
2
: the act of inflaming : the state of being inflamed

Examples of inflammation in a Sentence

The drug is used to reduce inflammation. inflammations of the throat and ears
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.
However, once infected, the virus can cause neurological symptoms due to inflammation or damage to the brain or lining of the brain and spinal cord, known as meningitis. Peter Aitken, MSNBC Newsweek, 20 Sep. 2025 Kong said this soft approach helps address risks such as ulcers, puncture injuries, and inflammation, which are often linked to rigid devices inside the body. Aamir Khollam, Interesting Engineering, 19 Sep. 2025 Food influences key biological pathways such as blood sugar and insulin sensitivity, chronic inflammation, immune and metabolic function and the gut microbiome. Chrystle Fiedler, USA Today, 19 Sep. 2025 Notably, Merrill was diagnosed with ulcerative colitis during the development of Good Culture in 2014, which is an autoimmune gut disease caused by chronic inflammation. Emma Sandler, Forbes.com, 19 Sep. 2025 See All Example Sentences for inflammation

Word History

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of inflammation was in the 15th century

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Cite this Entry

“Inflammation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/inflammation. Accessed 23 Sep. 2025.

Kids Definition

inflammation

noun
in·​flam·​ma·​tion ˌin-flə-ˈmā-shən How to pronounce inflammation (audio)
1
: the act of inflaming : the state of being inflamed
2
: a bodily response to injury in which heat, redness, pain, swelling, and more than the usual amount of blood are present in the area affected

Medical Definition

inflammation

noun
in·​flam·​ma·​tion ˌin-flə-ˈmā-shən How to pronounce inflammation (audio)
: a local response to cellular injury that is marked by capillary dilatation, leukocytic infiltration, redness, heat, pain, swelling, and often loss of function and that serves as a mechanism initiating the elimination of noxious agents and of damaged tissue
Last Updated: - Updated example sentences
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