concussion con·cus·sion (kən-kŭsh'ən)
n.
A violent shaking or jarring.
An injury to a soft structure, especially the brain, produced by a violent blow and followed by a temporary or prolonged loss of function.
| concussion (kən-kŭsh'ən) Pronunciation Key
An injury to a soft structure, especially the brain, produced by a violent blow or impact and followed by a temporary, sometimes prolonged, loss of function. A concussion of the brain results in transient loss of consciousness or memory. |