inflammation

noun

in·​flam·​ma·​tion ˌin-flə-ˈmā-shən 

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

Per BrightOcular, potential complications include infections, high pressure in the eye, glaucoma, inflammation of the iris, swelling in the cornea, loss of cells around the cornea, deterioration of the iris and more. —Raven Brunner, PEOPLE, 8 Nov. 2025

Key Takeaways Turmeric and honey may help reduce inflammation when incorporated into a healthy diet. —Gillian Mohney, Verywell Health, 7 Nov. 2025

After checking the participants' cholesterol, blood sugar, liver fat and inflammation, scientists found that cholesterol and other heart-health markers stayed about the same for both types of fats. —Deirdre Bardolf, FOXNews.com, 7 Nov. 2025

Once inside the urinary tract, bacteria attach to the bladder lining, multiply and trigger inflammation – resulting in the hallmark symptoms of infection. —Daryl Austin, USA Today, 7 Nov. 2025

Word History

First Known Use

15th century, in the meaning defined at sense 1

Phrases Containing inflammation

• anti-inflammation

Rhymes for inflammation

• abdication
• aberration
• abjuration
• abnegation
• abrogation
• acceptation
• acclamation
• acclimation
• accusation
• activation
• actuation
• acylation

Kids Definition

inflammation

noun

in·​flam·​ma·​tion ˌin-flə-ˈmā-shən 

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 

: 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