What does inflammation mean?
Inflammation is the body’s response to injury, infection, or irritation, typically involving swelling, redness, warmth, and pain. These effects are part of a protective process in which the immune system limits damage, isolates threats, and supports healing. Acute inflammation develops rapidly, while chronic inflammation persists over a long period and can contribute to various health problems. The word also has a figurative meaning: it describes unrest, agitation, or rhetoric that intensifies a dispute or provokes strong reactions. In that sense, an inflammatory speech or controversy is one that deliberately heightens anger or division. Understanding both meanings helps distinguish a medical condition from a description of heated public discourse. Inflammation is a useful term because it names not only a recognizable set of physical symptoms but also a broader pattern of social conflict in which tensions are allowed to intensify.
nounThe swelling, redness, heat, and pain that occur in tissue as part of the body’s response to injury, infection, or irritation. The word can also refer figuratively to unrest, agitation, or strong criticism within a group or public discussion.
- A protective bodily response characterized by swelling, redness, heat, and often pain, caused by injury, infection, or irritation.
- A broader medical condition involving inflammation of a particular organ or tissue.
- Figurative social or political unrest, agitation, or heated dispute.
"The doctor said the inflammation around her ankle should begin to subside with rest and anti-inflammatory medication."
"Anti-inflammatory medicine helped reduce the inflammation in her knee."
"The speech was widely regarded as an inflammatory appeal to supporters on both sides."
The plural is used when referring to distinct instances or examples of inflammation, especially in medical or scientific contexts.
"The study examined inflammations affecting several different types of tissue."
Inflammation was named from the Latin inflammatio, meaning “a setting on fire,” reflecting the ancient belief that the heat and redness of injured tissue resembled fire.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does inflammation come from?
The word comes from Latin inflammatio, a noun meaning “a setting on fire,” formed from inflammare, “to set on fire,” which itself combines in- with flamma, “flame.” English borrowed the medical sense during the early 17th century, when the burning sensation and heat associated with inflamed tissue encouraged the metaphor. The related English forms inflammatory, inflammability, and inflammable developed from the same Latin root, although inflammable has largely fallen out of use in favor of flammable.
Related word forms
How inflammation is actually used
In medicine, inflammation is generally a normal protective response, although persistent or excessive inflammation can cause harm. In figurative use, “inflammatory” often describes language, rhetoric, or behavior intended to provoke strong reactions.
Easily confused with inflammation
Inflammation is a bodily or figurative swelling response, whereas inflammable means capable of catching fire and is now usually replaced by flammable.