An open wound is an example of a lesion.
Origin of lesion
- Middle English lesioun from Old French lesion from Latin laesiō laesiōn- from laesus past participle of laedere to injure
From American Heritage Dictionary of the English Language, 5th Edition
- From Middle English, from Middle French, from Latin laesiÅ (“injury"), itself from laesus, perfect passive participle of laedÅ (“I injure, hurt").