Webster
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Webster’s Revised Unabridged Dictionary · 1913

Concussion

Con·cus′sion (kŏn·kŭsh′ŭn), 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.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty.