- The definition of a lesion is a wound or an area of the body that has been damaged through injury or disease.
An open wound is an example of a lesion.
- an injury; hurt; damage
- an injury or other change in an organ or tissue of the body tending to result in impairment or loss of function
Origin of lesionMiddle English ; from Middle French ; from Classical Latin laesio ; from laesus, past participle of laedere, to harm, injure
transitive verble·sioned, le·sion·ing, le·sions
Origin of lesionMiddle English lesioun, from Old French lesion, from Latin laesiō, laesiōn-, from laesus, past participle of laedere, to injure.
(third-person singular simple present lesions, present participle lesioning, simple past and past participle lesioned)
- To wound or injure, especially in an experiment or other controlled procedure.
From Middle English, from Middle French, from Latin laesiÅ (“injury"), itself from laesus, perfect passive participle of laedÅ (“I injure, hurt").