concussion


con·cus·sion

noun \kən-ˈkəsh-ən\

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
con·cus·sive \-ˈkəs-iv\ adjective

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