Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Any of various pathological or traumatic changes in a bodily organ or tissue, including tumors, ulcers, sores, and wounds.
  • transitive verb To cause a lesion to form on or in.

from The Century Dictionary.

  • noun A hurting; hurt; wound; injury.
  • noun In civil law, the loss or injury suffered in a commutative contract by the party who does not receive an equivalent for what he gives.
  • noun In pathology, any morbid change in the structure of organs.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Civil Law) Loss sustained from failure to fulfill a bargain or contract.
  • noun (Med.) Any morbid change in the exercise of functions or the texture of organs.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A wound or injury.
  • noun medicine An infected or otherwise injured or diseased organ or part, especially such patch of skin.
  • verb transitive To wound or injure, especially in an experiment or other controlled procedure.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

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

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Middle English lesioun, from Old French lesion, from Latin laesiō, laesiōn-, from laesus, past participle of laedere, to injure.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Middle English, from Middle French, from Latin laesiō ("injury"), itself from laesus, perfect passive participle of laedō ("I injure, hurt").

Examples

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