A traumatic injury to tissues of the body such as the brain as a result of a violent blow, shaking, or spinning. For information specifically about concussion of the brain, please also see Concussion of the brain.
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1. A violent shaking or jarring. 2. An injury of a soft structure, as the brain, resulting from a blow or violent shaking. SYN: commotio. [L. concussio, fr. con- cutio, pp. -cussus, to shake violently]
- brain c. a clinical syndrome due to mechanical, usually traumatic, forces; characterized by immediate and transient impairment of neural function, such as alteration of consciousness, disturbance of vision and equilibrium, etc. SYN: commotio cerebri.
- spinal c. SYN: spinal cord c..
- spinal cord c. injury to the spinal cord due to a blow to the vertebral column with transient or prolonged dysfunction below the level of the lesion. SYN: spinal c..

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con·cus·sion kən-'kəsh-ən n
1) a hard blow or collision
2) a condition resulting from the stunning, damaging, or shattering effects of a hard blow esp a jarring injury of the brain resulting in disturbance of cerebral function and sometimes marked by permanent damage
con·cus·sive -'kəs-iv adj

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a condition caused by injury to the head, characterized by headache, confusion, and amnesia. These symptoms may be prolonged and constitute a post-concussional syndrome. There may be no recognizable structural damage to the brain, but scans may reveal evidence of contusion (bruising) within the brain. Repeated concussion eventually causes symptoms suggesting brain damage. See also punch-drunk syndrome.

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con·cus·sion (kən-kushґən) [L. concussio] a violent jar or shock, or the condition which results from such an injury. concussional, concussive adj

Medical dictionary. 2011.

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  • Concussion — Classification and external resources Acceleration (g forces) can exert rotational forces in the brain, especially the midbrain and diencephalon. ICD 10 …   Wikipedia

  • concussion — [ kɔ̃kysjɔ̃ ] n. f. • 1539; « commotion, secousse » 1440; lat. concussio, de concutere « frapper » ♦ Dr. et didact. Perception illicite par un agent public de sommes qu il sait ne pas être dues. ⇒ exaction , malversation, péculat. Fonctionnaire… …   Encyclopédie Universelle

  • Concussion — Con*cus sion, n. [L. concussio, fr. concutere, concussum, to shake violenty; con + quatere to shake. See {Cashier}, {Quash}.] 1. A shaking or agitation; a shock; caused by the collision of two bodies. [1913 Webster] It is believed that great… …   The Collaborative International Dictionary of English

  • concussion — CONCUSSION. s. f. Vexation, action par laquelle un Magistrat, un Officier public exige au delà de ce qui lui est dû. Horrible, manifeste concussion. Il est accusé, il est convaincu de concussion. Il a commis, il a sait d horribles, d étranges… …   Dictionnaire de l'Académie Française 1798

  • concussion — CONCUSSION. s. f. v. Vexation, Se dit d un Magistrat, ou Officier public, ou de quelque particulier sans authorité, qui leve sur le peuple des deniers qui ne sont pas dûs, ou contre les formes, & qui les oblige à des travaux &c. Horrible,… …   Dictionnaire de l'Académie française

  • Concussion — (Concussio, Erpressung), das Verbrechen der Erzwingung eines rechtswidrigen Vermögensvortheiles durch thätliche Gewalt, durch gefährliche Drohung mit Tödtung od. schwerer Körperverletzung, mit gerichtlicher Anzeige od. anderen Schreckmitteln. Die …   Pierer's Universal-Lexikon

  • concussion — index collision (accident) Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • concussion — c.1400, from L. concussionem (nom. concussio) a shaking, noun of action from pp. stem of concutere shake violently, from com together (see COM (Cf. com )) + quatere to shake (see QUASH (Cf. quash)). Modern brain injury sense is from 1540s …   Etymology dictionary

  • concussion — shock, percussion, *impact, impingement, collision, clash, jar, jolt Analogous words: beating, pounding, buffeting (see BEAT vb): striking, smiting, swatting, slapping (see STRIKE vb) …   New Dictionary of Synonyms

  • concussion — [n] collision, shaking blast, blow, buffeting, bump, clash, clout, crack, crash, hit, impact, injury, jar, jarring, jolt, jolting, jounce, pounding, punch, shock, trauma; concept 189 …   New thesaurus

  • concussion — Concussion, Il est accusé de concussions et deniers mal prins par luy durant le temps de son magistrat, Repetundarum, vel de repetundis pecuniis a prouincialibus accusatur. Il avoit fait plusieurs concussions et prins argent et dons corrompables …   Thresor de la langue françoyse

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