con·​cus·​sion | \kən-ˈkə-shən \

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 \ 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

Mayfield led four scoring drives and completed 17 of 23 passes for 201 yards in just over a half of play after Taylor suffered a concussion. Benjamin Brown, Fox News, "Cleveland Browns get first win in nearly two years, defeat NY Jets," 21 Sep. 2018 The appearance was Walker's first since sustaining a concussion March 31 against Indy XI. Patrick Brennan,, "FC Cincinnati battles Pittsburgh Riverhounds to 2-2 draw," 21 Apr. 2018 Brown told the station her son suffered a concussion. Jewel Wicker, Teen Vogue, "A Former Atlanta Police Officer Who Beat a Black Teenager on the Job Has Been Indicted for Assault," 12 Oct. 2018 Valek said the principals investigated the reasons for the declines, and parents expressed concerns for their children’s safety and potential for concussions. Suzanne Baker, Naperville Sun, "Naperville area middle schools replacing tackle with flag football," 25 Apr. 2018 His clients are two women and a man, two of whom suffered concussions. Maria Elena Vizcaino,, "Daytona Beach roller-coaster victims might have 'lifelong injuries,' lawyers say," 18 June 2018 Mann claimed to have suffered a concussion and neck injury as a result of being thrown to the ground by Jay Barbeau. The Bulletin,, "Road rage victim commits road rage herself, police say," 9 June 2018 The students also pulled fire alarms and began pushing and shoving him and his faculty interviewer, who suffered a concussion. Alina Tugend, New York Times, "Colleges Grapple With Where — or Whether — to Draw the Line on Free Speech," 5 June 2018 Roscoe sustained a concussion from being kicked in the head. Laney Ruckstuhl,, "2 Manchester, N.H. officers hurt after men spark riot outside bar," 11 May 2018

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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Last Updated

5 Dec 2018

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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 ( US ) ( Brit )


con·​cus·​sion | \kən-ˈkə-shən \

Kids Definition of concussion

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


con·​cus·​sion | \kən-ˈkəsh-ən \

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 \ adjective

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