2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Concussion \Con*cus"sion\, n. [L. concussio, fr concutere
concussum to shake violenty; con- + quatere to shake. See
{Cashier}, {Quash}.]
1. A shaking or agitation; a shock; caused by the collision
of two bodies.
It is believed that great ringing of bells, in
populous cities, hath dissipated pestilent air;
which may be from the concussion of the air.
--Bacon.
2. (Med.) A condition of lowered functional activity, without
visible structural change, produced in an organ by a
shock, as by fall or blow; as a concussion of the brain.
3. (Civil Law) The unlawful forcing of another by threats of
violence to yield up something of value.
Then concussion, rapine, pilleries, Their catalogue
of accusations fill. --Daniel.
{Concussion fuse} (Mil.), one that is ignited by the
concussion of the shell when it strikes.
Syn: See {Shock}.
From WordNet r 1.6 [wn]:
concussion
n 1: injury to the brain caused by a blow; usually resulting in
loss of consciousness
2: any violent blow or collision [syn: {shock}]
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