con·​cus·​sion | \ kən-ˈkə-shən How to pronounce concussion (audio) \

Definition of concussion

1a : a stunning, damaging, or shattering effect from a hard blow especially : a jarring injury of the brain resulting in disturbance of cerebral function The football player suffered a concussion.
b : a hard blow or collision
2 : agitation, shaking The concussion from the explosion was felt 12 miles away.

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Other Words from concussion

concussive \ kən-​ˈkə-​siv How to pronounce concussive (audio) \ adjective

Choose the Right Synonym for concussion

impact, collision, shock, concussion mean a forceful, even violent contact between two or more things. impact may be used to imply contact between two things, at least one of which is impelled toward the other. the glass shattered on impact with the floor collision implies the coming together of two or more things with such force that both or all are damaged or their progress is severely impeded. the collision damaged the vehicle shock often denotes the effect produced by a collision and carries the suggestion of something that strikes or hits with force. the shock of falling rocks concussion when not in technical use, often suggests the shattering, disrupting, or weakening effects of a collision, explosion, or blow. bystanders felt the concussion of the blast

Examples of concussion in a Sentence

She suffered a severe concussion after falling on the ice. He went to hospital with concussion.

Recent Examples on the Web

Studies of concussions and their long-term impact—specifically, the risk of the neurodegenerative disease CTE—have rocked the NFL and filtered down to the roots of the sport. Jason Gay, WSJ, "Would You Watch Football Without All the Violence?," 21 Nov. 2018 One of the key findings is that a relatively new technology known as Multi-Directional Impact Protection System, or MIPS, can lessen the risk of concussion. Alan Levin,, "Bicyclists’ Injury Risk Could Be Doubled If They Lack Latest Helmets," 26 June 2018 Alabama's starting lineup: Collin Sexton, Dazon Ingram, Herbert Jones, Galin Smith and Alex Reese. -- Alabama standout forward Donta Hall has been ruled out after suffering a concussion during the Tide's win over Auburn on Saturday. Matt Zenitz,, "Kentucky eliminates Alabama from SEC tournament," 10 Mar. 2018 Toddlers can use bumper pads to assist with climbing out of a crib, increasing the risk of head injury or concussion related to a fall. Rachel Rothman, Good Housekeeping, "Are Crib Bumpers Safe? Experts Say Not Even Those "Breathable" Mesh Ones Should Be Used," 29 Apr. 2019 Umpires: Home-plate umpire Brian Knight is in concussion protocol after a foul ball by Pederson knocked his mask off during the first inning. Joe Reedy, The Seattle Times, "Ex-Dodger Grandal leads Brewers to 8-5 win over Los Angeles," 13 Apr. 2019 Within seconds, the rocket, packed with solid rocket fuel, detonated in an ear-shattering concussion. Joe Pappalardo, Popular Mechanics, "Can the U.S. Save Alcantara, Brazil’s Cursed Spaceport?," 20 Mar. 2019 PSG’s injury list grew further with right back Thomas Meunier also ruled out of Tuesday’s game with mild concussion. Jerome Pugmire, The Seattle Times, "PSG missing Cavani for Champions League 1st leg v Man United," 10 Feb. 2019 In January 2018, Roger Stone appeared on a podcast for Infowars, the far-right website, and burst into a monologue on an unlikely topic: the NFL’s billion-dollar concussion settlement with former players. Andrew Beaton And Shelby Holliday, WSJ, "How Roger Stone Entangled Himself in the NFL’s Concussion Settlement," 8 Feb. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'concussion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of concussion

14th century, in the meaning defined at sense 1a

History and Etymology for concussion

Middle English concussioun, from Latin concussion-, concussio, from concutere to shake violently, from com- + quatere to shake

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Statistics for concussion

Last Updated

6 Jun 2019

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Time Traveler for concussion

The first known use of concussion was in the 14th century

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More Definitions for concussion



English Language Learners Definition of concussion

: an injury to the brain that is caused by something hitting the head very hard


con·​cus·​sion | \ kən-ˈkə-shən How to pronounce concussion (audio) \

Kids Definition of concussion

: injury to the brain caused by a hard hit on the head


con·​cus·​sion | \ kən-ˈkəsh-ən How to pronounce concussion (audio) \

Medical Definition of concussion

1 : a hard blow or collision
2 : a condition resulting from the stunning, damaging, or shattering effects of a hard blow especially : a jarring injury of the brain resulting in disturbance of cerebral function and sometimes marked by permanent damage

Other Words from concussion

concussive \ -​ˈkəs-​iv How to pronounce concussive (audio) \ adjective

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Comments on concussion

What made you want to look up concussion? Please tell us where you read or heard it (including the quote, if possible).


to move with exaggerated bouncy motions

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