2
: an abnormal change in structure of an organ or part due to injury or disease
especially
: one that is circumscribed (see circumscribe sense 1) and well defined
Examples of lesion in a Sentence
Recent Examples on the Web
While toxic in humans, causing lesions and other serious long-term health problems, xylazine may delay the onset of withdrawal symptoms in some users.
—
Brian Mann, NPR, 18 Sep. 2024
There can be up to 10 parts per billion of arsenic in drinking water, per EPA standards, but chronic exposure to high levels of arsenic have been linked to skin lesions and cancer.
—Korin Miller, Health, 13 Sep. 2024
The lesion on the girl's cheek with satellite blisters noted by arrows.
—Beth Mole, Ars Technica, 5 Sep. 2024
The name beard ringworm describes the appearance of round skin lesions that form a rash in the affected area.
—Anna Giorgi, Verywell Health, 15 Aug. 2024
See all Example Sentences for lesion 
Brian Mann, NPR, 18 Sep. 2024
There can be up to 10 parts per billion of arsenic in drinking water, per EPA standards, but chronic exposure to high levels of arsenic have been linked to skin lesions and cancer.
—Korin Miller, Health, 13 Sep. 2024
The lesion on the girl's cheek with satellite blisters noted by arrows.
—Beth Mole, Ars Technica, 5 Sep. 2024
The name beard ringworm describes the appearance of round skin lesions that form a rash in the affected area.
—Anna Giorgi, Verywell Health, 15 Aug. 2024
See all Example Sentences for lesion
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'lesion.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near lesion
Cite this Entry
“Lesion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lesion. Accessed 2 Oct. 2024.
Copy CitationKids Definition
lesion
noun
le·sion
ˈlē-zhən 
: a change in the structure of a bodily organ or part due to injury or disease
especially
: an injured or diseased spot or area clearly marked off from healthy tissue around it
Medical Definition
Legal Definition
lesion
noun
le·sion
ˈlē-zhən
in the civil law of Louisiana
: loss from failure to receive a threshold amount or value (as one-half market value) for immovable property conveyed or transferred by a commutative contract (as a sale or exchange)
called also lesion beyond moiety
compare unjust enrichmentEtymology
Anglo-French, damage, injury, from Latin laesio, from laedere to injure
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