lesion

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

Definition of lesion

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 Adjuvant bets on a company that treats an infection found in West Africa that causes itching and lesions in the eyes and can lead to blindness. Sabrina Willmer, Bloomberg.com, "Venture Capitalists Shun Unprofitable Yet World-Saving Vaccines," 10 May 2020 The Columbia researchers have been palpating the skin of the mice and looking for lesions on their corneas. Michael Laris, Anchorage Daily News, "Scientists think they know ways to combat viruses on airplanes. They’re too late for this pandemic.," 2 May 2020 Once the bacteria reaches a certain threshold, which researchers estimate is about 1 million bacteria, the citrus greening disease bacteria escapes through lesions in the gut and enters the bug's bloodstream to be carried to the saliva. Amanda Morris, AZCentral.com, "As disease threatens citrus trees, researchers target the insects that are spreading it," 15 Apr. 2020 But some patients have also experienced trouble breathing, and chest X-rays have shown invasive lesions in both lungs. Beth Mole, Ars Technica, "Never-before-seen virus may be behind mystery outbreak in China," 8 Jan. 2020 The Columbia researchers have been palpating the skin of the mice and looking for lesions on their corneas. Michael Laris, Anchorage Daily News, "Scientists think they know ways to combat viruses on airplanes. They’re too late for this pandemic.," 28 Apr. 2020 From reports of blue and purple discolouration in toes to sensitive blisters, as well as cases of gangrene and vascular lesions, visible signs of the coronavirus on skin are being observed more frequently. Asia Ewart, refinery29.com, "Skin Rashes Could Be A Potential Symptom Of COVID-19," 21 Apr. 2020 Some were in a critical condition, and a number had invasive lesions on both lungs. Julia Hollingsworth, CNN, "A coronavirus test can be developed in 24 hours. So why are some countries still struggling to diagnose?," 24 Mar. 2020 Patients infected with coronavirus, now officially named Covid-19, likely have lesions in their lungs, according to experts. Mary Hui, Quartz, "Why the number of coronavirus cases in China surged by more than 33% in one day," 12 Feb. 2020

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

Time Traveler

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

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Statistics for lesion

Last Updated

18 May 2020

Cite this Entry

“Lesion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lesion. Accessed 25 May. 2020.

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More Definitions for lesion

lesion

noun
How to pronounce lesion (audio)

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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Comments on lesion

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