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From concuss +‎ -ion From the Latin concussio.


  • IPA(key): /kənˈkʌʃən/, /kənˈkʌʃn/
  • (file)


concussion (countable and uncountable, plural concussions)

  1. A violent collision or shock.
    • 1631, Francis [Bacon], “(please specify |century=I to X)”, in Sylua Syluarum: Or A Naturall Historie. In Ten Centuries. [], 3rd edition, London: [] VVilliam Rawley; [p]rinted by J[ohn] H[aviland] for William Lee [], OCLC 1044372886:
      It is believed that great ringing of bells, in populous cities, hath dissipated pestilent air; which may be from the concussion of the air.
  2. (uncountable in Commonwealth of Nations, countable in Canada, US) An injury to part of the body, most especially the brain, caused by a violent blow, followed by loss of function.
  3. (obsolete, law, civil law) The unlawful forcing of another by threats of violence to yield up something of value.
    • 1595, Samuel Daniel, “(please specify the folio number)”, in The First Fowre Bookes of the Ciuile Wars between the Two Houses of Lancaster and Yorke, London: [] P[eter] Short for Simon Waterson, OCLC 28470143:
      Then Concussion, Rapine, Pillories, / Their Catalogue of Accusations fill.

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concussion in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913




concussion f (plural concussions)

  1. political corruption, misappropriation

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