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Pronunciation: kon-ku'shun


  1. A violent shaking or jarring.
  2. An injury of a soft structure, as the brain, resulting from a blow or violent shaking.

Synonym(s): commotio

[L. concussio, fr. con- cutio, pp. -cussus, to shake violently]

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.