lesion Meaning, Definition & Usage

  1. noun any localized abnormal structural change in a bodily part
  2. noun an injury to living tissue (especially an injury involving a cut or break in the skin)
    wound.

WordNet

Le"sion noun
Etymology
F. lesion, L. laesio, fr. laedere, laesum, to hurt, injure.
Definitions
  1. A hurt; an injury. Specifically: (a) (Civil Law) Loss sustained from failure to fulfill a bargain or contract. Burrill. (b) (Med.) Any morbid change in the exercise of functions or the texture of organs. Dunglison.

Webster 1913