lesion

noun
le·​sion | \ ˈlē-zhən How to pronounce lesion (audio) \

Definition of lesion

1 : injury, harm
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

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Other Words from lesion

lesioned \ ˈlē-​zhənd How to pronounce lesioned (audio) \ adjective

Examples of lesion in a Sentence

Recent Examples on the Web

And both estrogen and progestin in hormonal treatments can prevent the growth of endometriosis lesions in some people. Colleen Stinchcombe, SELF, "How Does Endometriosis Impact Fertility?," 8 Feb. 2019 While antibiotic treatment may stop the progression of lesions, patients are at risk of relapse for 6-18 months post-treatment. Alexandria Hein, Fox News, "'Flesh-eating' STD allegedly reported in England," 22 Aug. 2018 For some, the infection causes painful, chronic outbreaks of genital lesions that interfere with their health and sexuality. Becky Little, Smithsonian, "Can We Gene-Edit Herpes Away?," 23 Mar. 2018 Minimize damage from Fusarium wilt, which causes spears, leaves, and stems to be small with large lesions at or below the soil line, by purchasing disease-free roots and using good garden sanitation. The Editors, Good Housekeeping, "How to Grow Garden-Fresh Asparagus," 19 Aug. 2018 Jesty vaccinated his wife and two sons with pus from a cowpox lesion, using his wife’s knitting needle. William F. Bynum, WSJ, "‘Between Hope and Fear’ Review: Anxieties Immune to Reason," 16 Aug. 2018 If your endometriosis is severe, your doctor may recommend removing the endometriosis lesions surgically, Shepherd says. Korin Miller, Allure, "This Is What Endometriosis Pain Feels Like — and How to Treat It," 6 Mar. 2018 People with higher blood pressure across the study period tended to have more brain lesions, known as infarcts, which are areas of dead brain tissue that have lost their blood supply. Alice Park, Time, "This Surprising Factor May Raise Your Risk of Alzheimer’s," 11 July 2018 Bites from brown recluse spiders can cause severe, skin-destroying lesions, according to the Centers for Disease Control and Prevention. Char Adams, PEOPLE.com, "Woman Bit by Spider Must Pay to Leave Infested Apartment — As Couple Worries About New Renters," 11 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'lesion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of lesion

15th century, in the meaning defined at sense 1

History and Etymology for lesion

Middle English, from Anglo-French, from Latin laesion-, laesio, from laedere to injure

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Time Traveler for lesion

The first known use of lesion was in the 15th century

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More Definitions for lesion

lesion

noun

English Language Learners Definition of lesion

medical : an injured or diseased spot or area on or in the body

lesion

noun
le·​sion | \ ˈlē-zhən How to pronounce lesion (audio) \

Kids Definition of lesion

: an abnormal spot or area of the body caused by sickness or injury

lesion

noun
le·​sion | \ ˈlē-zhən How to pronounce lesion (audio) \

Medical Definition of lesion

 (Entry 1 of 2)

: an abnormal change in structure of an organ or part due to injury or disease especially : one that is circumscribed and well defined

Other Words from lesion

lesioned \ -​zhənd How to pronounce lesioned (audio) \ adjective

Medical Definition of lesion (Entry 2 of 2)

: to produce lesions in (as an animal's brain)

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lesion

noun
le·​sion | \ ˈlē-zhən How to pronounce lesion (audio) \

Legal Definition of lesion

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 enrichment

History and Etymology for lesion

Anglo-French, damage, injury, from Latin laesio, from laedere to injure

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More from Merriam-Webster on lesion

Rhyming Dictionary: Words that rhyme with lesion

Thesaurus: All synonyms and antonyms for lesion

Spanish Central: Translation of lesion

Nglish: Translation of lesion for Spanish Speakers

Britannica English: Translation of lesion for Arabic Speakers

Britannica.com: Encyclopedia article about lesion

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