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Definition of: concussion
(kən·kush′ən) noun
1. A violent shaking; shock; jar.
2. Pathol. A violent shock to some organ by a fall or sudden blow; also, the condition resulting from it. See synonyms under BLOW, COLLISION. [<L concussio, -onis <concutere. See CONCUSS.]
—con·cus′sion·al adjective
—con·cus·sive (kən·kus′iv) adjective
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