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 concussion (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 Patrick Mahomes felt well enough to tweet after Sunday’s game, but Kansas City’s fate rests on whether the team’s starting quarterback is cleared from the N.F.L.’s concussion protocol. New York Times, "What We Learned From the N.F.L.’s Divisional Round," 17 Jan. 2021 At the time, the Cavs were already without starting point guard Darius Garland because of a shoulder sprain and steady backup Matthew Dellavedova was back home in concussion protocol. Chris Fedor, cleveland, "Cavaliers newbie Yogi Ferrell getting chance to show he still belongs in NBA: ‘I’m approaching this as if I have nothing to lose’," 12 Jan. 2021 Griffin missed last Monday's game against the Atlanta Hawks for rest, and missed Friday's game against the Celtics while going through concussion protocol. Omari Sankofa Ii, Detroit Free Press, "Blake Griffin, Josh Jackson to miss Detroit Pistons' game against Milwaukee Bucks," 4 Jan. 2021 The Pistons, who were without forward Blake Griffin (concussion protocol) in the second half, finished just 38% from the field. Connor Letourneau,, "Andrew Wiggins leads Warriors to comeback win over Pistons," 29 Dec. 2020 Boyd remains in the NFL’s concussion protocol and there’s really no reason to risk his health further this week. Eddie Brown, San Diego Union-Tribune, "Fantasy Football Week 17: Add and Drop (Championship edition)," 29 Dec. 2020 Skrine would have to be cleared from the concussion protocol to return. Brad Biggs,, "The Chicago Bears won again — and now a huge game with the Green Bay Packers is next. Brad Biggs’ 10 thoughts after their 41-17 victory in Week 16.," 28 Dec. 2020 Joey Bosa remains in concussion protocol but did rejoin his teammates on the field Wednesday. Jeff Miller, Los Angeles Times, "Chargers’ Chris Harris Jr. aims to put best foot forward against his old team, Denver," 23 Dec. 2020 Pierre-Louis had an ankle injury, and Holcomb was in the concussion protocol. Mark Inabinett |, al, "Elbow injury sidelines Shaun Dion Hamilton," 21 Dec. 2020

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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Time Traveler for concussion

Time Traveler

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

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Statistics for concussion

Last Updated

25 Jan 2021

Cite this Entry

“Concussion.” Dictionary, Merriam-Webster, Accessed 25 Jan. 2021.

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More Definitions for concussion


How to pronounce concussion (audio)

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 concussion (audio) \ adjective

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