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

The particles trigger inflammation and oxidative stress, which can harm cells in the body, causing a range of issues that have been linked to neurological damage and cancer. — Eduardo Cuevas, USA Today, 18 July 2026

Researchers did not find a significant association between segregation and amyloid beta levels, suggesting the effects may work through inflammation and neuronal injury pathways rather than amyloid buildup. — Samantha Agate, Charlotte Observer, 18 July 2026

The club is also without Carlos Rodón, who went on the IL with a case of elbow inflammation at the beginning of July. — Gary Phillips, New York Daily News, 17 July 2026

Smoke from wildfires is made of water vapor, pollutants and particulate matter, which can penetrate the lungs and bloodstream, trigger systemic inflammation, exacerbate conditions like asthma and increase the risk of heart attacks and strokes. — Mary Whitfill Roeloffs, Forbes.com, 17 July 2026

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