Definition of concussion in English:

concussion

Syllabification: con·cus·sion
Pronunciation: /kənˈkəSHən
 
/

noun

  • 1Temporary unconsciousness caused by a blow to the head. The term is also used loosely of the aftereffects such as confusion or temporary incapacity.
    More example sentences
    • The development of a better understanding of mild concussion is important for several reasons.
    • These are signs of concussion and will need medical treatment.
    • The vice chancellor is suffering from mild concussion after hitting his head on a tree branch earlier on the day of our interview.
    Synonyms
    temporary unconsciousness; brain injury
  • 2A violent shock as from a heavy blow: the ground shuddered with the concussion of the blast
    More example sentences
    • Thunderous night air raids on nearby Naples Harbor were becoming a regular thing and the tracers, explosions and bomb concussions made a violent show which we watched from the roof of our building.
    • The movie begins with the crash, a violent concussion that leaves most of the crew and passengers dead.
    • The other fighters shook from the concussion waves as their pilots looked in shock at the two fireballs.
    Synonyms
    force, impact, shock, jolt

Origin

late Middle English: from Latin concussio(n-), from the verb concutere 'dash together, shake' (see concuss).

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