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1. A violent jarring; a shock: The concussion from the explosion broke windows three blocks away.
2. An injury to an organ, especially the brain, produced by a violent blow and followed by a temporary or prolonged loss of function.

[Middle English concussioun, bruise, contusion, from Latin concussiō, concussiōn-, concussion, from concussus, past participle of concutere, to strike together; see concuss.]

con·cus′sive (-kŭs′ĭv) adj.
con·cus′sive·ly adv.
References in periodicals archive ?
The company added that the military grant will support the development of an expanding foam hemostat for the treatment of internal non-compressible haemorrhage that typically results from being struck by shrapnel or a significant concussive force.
He exposed the 28-year-old's limitations: his inability to sustain pressure and a lack of concussive firepower.
Let us hope the concussive punching Callum can do just that, and earn the win which would set up a mouth-watering final.
Congress must pursue multiple approaches to understand better the chronic effects of traumatic brain injury, including the long-term neurodegenerative problems associated with multiple concussive injuries.
While some patients recover fully from a concussion, or continue with minor impairment, others develop CTE, a form of progressive brain degeneration that can result from major concussive injuries or from multiple minor or "subthreshold" brain traumas.
South African second row George Earle has shaken off a heel problem, while prop Brad Thyer makes his first appearance since being hospitalised with delayed concussive symptoms after sustaining a head injury against Glasgow in January.
Chronic traumatic encephalopathy (CTE) is a neurodegenerative disease that is thought to develop secondary to repetitive head trauma, including concussive and subconcussive injuries.
Sam Cane and Malakai Fekitoa are set to face disciplinary hearings this week but Joe Schmidt has bitten his tongue over South African referee Jaco Peyper as three Irishmen faced concussive tests.
Synopsis: Simply stated, this is the most up-to-date resource on nutritional supplements for the prevention and improved management of concussive injury, TBI, and PTSD.
It does seem that with the much bigger impacts and speed of the game that these repeated sub-concussive and concussive knocks are becoming more damaging more frequently.
He will be considered to have had a concussive impact and that will certainly put him in doubt for next weekend.
Ahead of today's opening one-day international clash with Pakistan, Morgan revealed he suffered from headaches and dizziness with the sport more sensitive than ever to the dangers of concussive trauma after the death of Aussie Test batsman Phil Hughes last year.