Concussion



GRE

解释

GRE 红宝书

• n. 脑震荡; 强烈震动
• ［英］ n. 脑震荡;强烈震动 ( a violent shaking)
• ［记］ con＋cuss ( 震动) -> ion -> 震荡
• ［同］ 同根词: percussion ( 撞击, 震动) ; discussion ( 讨论)
• ［例］ a concussion caused by the explosion

Webster Collegiate

noun

• Etymology: Middle English concussioun, from Latin concussion-, concussio, from concutere to shake violently, from com- + quatere to shake
• Date: 14th century
• 1.
  • a. a stunning, damaging, or shattering effect from a hard blow; especially a jarring injury of the brain resulting in disturbance of cerebral function
  • b. a hard blow or collision
• 2. agitation, shaking
• Synonyms: see impact
• ? concussive adjective

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