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
To access a lesion in the patient’s hippocampus, a surgeon had removed the tissue from their left anterior temporal lobe, a part of the brain thought to play a role in our memory of objects, people, words and facts.
—
Will Sullivan, Smithsonian Magazine, 10 May 2024
The laparoscopy found 37 lesions and a cyst on her ovary, which was removed via surgery.
—Brendan Le, Peoplemag, 4 May 2024
The woman who later got lesions from Mesofrance ordered from Reyes had called her in November 2022 after watching her TikTok videos, according to prosecutors.
—Julia Marnin, Miami Herald, 2 May 2024
However, the task force's analysis found that getting scans every year can yield more false positive results, which can lead to unnecessary biopsies or women receiving treatment for lesions that don’t necessarily pose a health risk.
—Aria Bendix, NBC News, 30 Apr. 2024
Multiple sclerosis is one of the conditions that can cause brain lesions, the clinic notes.
—USA TODAY, 27 Mar. 2024
Each cell in the body experiences roughly 100,000 DNA lesions every single day.
—William A. Haseltine, Forbes, 25 Feb. 2024
Healthcare providers stage endometriosis depending on the location, size, and depth of lesions.
—Anna Almendrala, Health, 30 Mar. 2024
Endometriosis is also often associated with bowel dysfunction due to lesions that originate from this area.
—Megan Dubois, Condé Nast Traveler, 21 Mar. 2024
Will Sullivan, Smithsonian Magazine, 10 May 2024
The laparoscopy found 37 lesions and a cyst on her ovary, which was removed via surgery.
—Brendan Le, Peoplemag, 4 May 2024
The woman who later got lesions from Mesofrance ordered from Reyes had called her in November 2022 after watching her TikTok videos, according to prosecutors.
—Julia Marnin, Miami Herald, 2 May 2024
However, the task force's analysis found that getting scans every year can yield more false positive results, which can lead to unnecessary biopsies or women receiving treatment for lesions that don’t necessarily pose a health risk.
—Aria Bendix, NBC News, 30 Apr. 2024
Multiple sclerosis is one of the conditions that can cause brain lesions, the clinic notes.
—USA TODAY, 27 Mar. 2024
Each cell in the body experiences roughly 100,000 DNA lesions every single day.
—William A. Haseltine, Forbes, 25 Feb. 2024
Healthcare providers stage endometriosis depending on the location, size, and depth of lesions.
—Anna Almendrala, Health, 30 Mar. 2024
Endometriosis is also often associated with bowel dysfunction due to lesions that originate from this area.
—Megan Dubois, Condé Nast Traveler, 21 Mar. 2024
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 15 May. 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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