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
The only definitive diagnostic method is laparoscopy, during which lesions can be removed and the disease staged based on the depth, location, and type of adhesions.
—
Josh Hammer, Newsweek, 15 Feb. 2025
Additionally, experts noted that when melanoma spreads to the brain, there is often more than one lesion at a time.
—Vanessa Etienne, People.com, 13 Feb. 2025
Plaque lesions: Larger, flat-topped, raised areas of skin, often with a rough or scaly surface.
—Christopher Bergland, Verywell Health, 4 Feb. 2025
Available in various towns and cities across the UK, such services use imaging technology to assess each and every mole on your body, ruling out suspicious and potentially cancerous lesions, as well as tracking any changes to your moles over time.
—Varsha Patel, refinery29.com, 29 Dec. 2024
See all Example Sentences for lesion 
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Josh Hammer, Newsweek, 15 Feb. 2025
Additionally, experts noted that when melanoma spreads to the brain, there is often more than one lesion at a time.
—Vanessa Etienne, People.com, 13 Feb. 2025
Plaque lesions: Larger, flat-topped, raised areas of skin, often with a rough or scaly surface.
—Christopher Bergland, Verywell Health, 4 Feb. 2025
Available in various towns and cities across the UK, such services use imaging technology to assess each and every mole on your body, ruling out suspicious and potentially cancerous lesions, as well as tracking any changes to your moles over time.
—Varsha Patel, refinery29.com, 29 Dec. 2024
See all Example Sentences for lesion
Dictionary Entries Near lesion
Cite this Entry
“Lesion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lesion. Accessed 20 Feb. 2025.
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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