concussion

The definition of a concussion is a violent shaking or a shock, or an injury to the brain, particularly as the result of heavy blow to the head.

(noun)

An example of a concussion is the result of someone smacking her head into the dashboard in a car accident.

See concussion in Webster's New World College Dictionary

noun

a violent shaking; agitation; shock, as from impact
Med. a condition of impaired functioning of some organ, esp. the brain, as a result of a violent blow or impact

Origin: ME concussioun < L concussio < pp. of concutere, shake violently < com-, together + quatere, to shake: see quash

Related Forms:

See concussion in American Heritage Dictionary 4

noun

A violent jarring; a shock. See Synonyms at collision.
An injury to an organ, especially the brain, produced by a violent blow and followed by a temporary or prolonged loss of function.

Origin:

Origin: Middle English concussioun, bruise, contusion

Origin: , from Latin concussiō, concussiōn-, concussion

Origin: , from concussus

Origin: , past participle of concutere, to strike together; see concuss

Related Forms: