follow Dictionary.com

Your favorite word could be our Word of the Day!

lesion

[lee-zhuh n] /ˈli ʒən/
noun
1.
an injury; hurt; wound.
2.
Pathology. any localized, abnormal structural change in the body.
3.
Plant Pathology. any localized, defined area of diseased tissue, as a spot, canker, blister, or scab.
verb (used with object)
4.
to cause a lesion or lesions in.
Origin
late Middle English
1425-1475
1425-75; late Middle English < Middle French < Latin laesiōn- (stem of laesiō) injury, equivalent to Latin laes(us) (past participle of laedere to harm, equivalent to laed- verb stem + -tus past participle suffix, with -dt- > -s-) + -iōn- -ion
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for lesion
  • Have any suspicious lesion checked immediately, especially if it has grown quickly or is partially flat and partially raised.
  • Local brain damage of this sort is known to neurologists as a lesion.
  • It also bears distinctive knife cuts, a pierced ear, and a lesion near the nose.
  • It makes me wonder what would happen if they tried to lesion at a low pitch.
  • Note the presence of multiple colors within this melanoma lesion.
  • Studying it therefore became known as the lesion method.
  • In the case of a stroke, you say, the lesion is here.
  • The exact type of biopsy depends on how deep the lesion has penetrated the skin.
  • The result: a lesion which grew to four inches and put her in the hospital for a couple weeks.
  • Once a suspicious lesion is found, a biopsy is needed to diagnose basal cell cancer.
British Dictionary definitions for lesion

lesion

/ˈliːʒən/
noun
1.
any structural change in a bodily part resulting from injury or disease
2.
an injury or wound
Word Origin
C15: via Old French from Late Latin laesiō injury, from Latin laedere to hurt
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for lesion
n.

early 15c., from Middle French lesion, from Latin laesionem (nominative laesio) "injury," from past participle stem of laedere "to strike, hurt, damage," of unknown origin. Originally with reference to any sort of hurt, whether physical or not.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
lesion in Medicine

lesion le·sion (lē'zhən)
n.

  1. A wound or an injury.

  2. A localized pathological change in a bodily organ or tissue.

  3. An infected or diseased patch of skin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Encyclopedia Article for lesion

in physiology, a structural or biochemical change in an organ or tissue produced by disease processes or a wound. The alteration may be associated with particular symptoms of a disease, as when a gastric ulcer produces stomach pain, or it may take place without producing symptoms, as in the early stages of cancer. Certain lesions, such as the genital chancre of syphilis, are diagnostic of a particular disease, and early recognition of the physical or biochemical injury can help to prevent later, more serious manifestations of a disease; thus, the recognition and classification of disease lesions is a major part of pathology.

Learn more about lesion with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source

Word of the Day

Difficulty index for lesion

Most English speakers likely know this word

Word Value for lesion

6
8
Scrabble Words With Friends

Nearby words for lesion