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concussion

American  
[kuhn-kuhsh-uhn] / kənˈkʌʃ ən /

noun

  • concussions
    plural
  1. Pathology. injury to the brain or spinal cord due to jarring from a blow, fall, or the like.

  2. shock caused by the impact of a collision, blow, etc.

  3. the act of violently shaking or jarring.


concussion British  
/ kənˈkʌʃən /

noun

  1. a jarring of the brain, caused by a blow or a fall, usually resulting in loss of consciousness

  2. any violent shaking; jarring

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

concussion Scientific  
/ kən-kŭshən /
  1. An injury to a soft structure, especially the brain, produced by a violent blow or impact and followed by a temporary, sometimes prolonged, loss of function. A concussion of the brain results in transient loss of consciousness or memory.


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Etymology

Origin of concussion

First recorded in 1350–1400; Middle English, from Latin concussiōn-, stem of concussiō “a shaking,” also “earthquake, extortion”; equivalent to concuss + -ion

Explanation

A concussion is a violent blow, especially to the head, that often injures the brain or causes a loss of consciousness — an all-too-frequent occurrence, unfortunately, in contact sports like football or boxing. First used around 1400, concussion originates from the Latin concussionem, which means "a shaking." Your brain certainly gets "a shaking" when you take a heavy blow to the head, which sometimes causes injury or permanent damage. It's not just people, though, who get concussions; a building can also suffer from a concussion during an earthquake.

Keep Reading on Vocabulary.com

Vocabulary lists containing concussion

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

In an earlier statement, McConnell claimed he didn’t break any bones or suffer a concussion.

From The Wall Street Journal Aug. 6, 2026

"Mr Kneeland played in the modern era of concussion protocols and better helmets, and yet he still developed CTE," said Dr Chris Nowinski, co-founder and CEO of the Concussion & CTE Foundation.

From BBC Jul. 8, 2026

In 2023, McConnell tripped, sustained a concussion, and was away from the Senate for nearly six weeks.

From Slate Jul. 2, 2026

Catcher Dalton Rushing was replaced behind the plate by Chuckie Robinson in the bottom of the third inning so the team could check Rushing for a possible concussion.

From Los Angeles Times Jun. 23, 2026

Each concussion threw him, staggering, and he watched in sick astonishment as the cracks grew to gaping rifts wide enough to swallow a man.

From "Strange the Dreamer" by Laini Taylor

The “why” could be bad luck, better awareness in diagnosing concussions or something else.

From Los Angeles Times Jun. 14, 2026

New Orleans Saints: Jordyn Tyson, WR, Arizona State — Chris Olave has been great for the Saints, but he’s prone to concussions.

From Los Angeles Times Apr. 22, 2026

He sustained four concussions in six years, and met with doctors to see if he could continue his football career.

From MarketWatch Mar. 9, 2026

"I had been hiding concussions and neurological injuries for so long that it just became part of it," she said.

From BBC Feb. 19, 2026

He told us about Mr. Terupt’s wrestling and concussions and it not being all Peter’s fault.

From "Because of Mr. Terupt" by Rob Buyea

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