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Percussion   /pərkˈəʃən/   Listen
noun
Percussion  n.  
1.
The act of percussing, or striking one body against another; forcible collision, esp. such as gives a sound or report.
2.
Hence: The effect of violent collision; vibratory shock; impression of sound on the ear. "The thunderlike percussion of thy sounds."
3.
(Med.) The act of tapping or striking the surface of the body in order to learn the condition of the parts beneath by the sound emitted or the sensation imparted to the fingers. Percussion is said to be immediate if the blow is directly upon the body; if some intervening substance, as a pleximeter, is, used, it is called mediate.
Center of percussion. See under Center.
Percussion bullet, a bullet containing a substance which is exploded by percussion; an explosive bullet.
Percussion cap, a small copper cap or cup, containing fulminating powder, and used with a percussion lock to explode gunpowder.
Percussion fuze. See under Fuze.
Percussion lock, the lock of a gun that is fired by percussion upon fulminating powder.
Percussion match, a match which ignites by percussion.
Percussion powder, powder so composed as to ignite by slight percussion; fulminating powder.
Percussion sieve, Percussion table, a machine for sorting ores by agitation in running water.






Collaborative International Dictionary of English 0.48








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"Percussion" Quotes from Famous Books



... astrologers, call the evil influences of the stars, evil aspects; so that still there seemeth to be acknowledged, in the act of envy, an ejaculation or irradiation of the eye. Nay, some have been so curious, as to note, that the times when the stroke or percussion of an envious eye doth most hurt, are when the party envied is beheld in glory or triumph; for that sets an edge upon envy: and besides, at such times the spirits of the person envied, do come forth most into the outward parts, and so ...
— Essays - The Essays Or Counsels, Civil And Moral, Of Francis Ld. - Verulam Viscount St. Albans • Francis Bacon

... a little nervous as he prepared for this latest test. But he was not nervous enough to drop any of those queer, cheese-like slabs. For, though he knew that a considerable percussion was needed to set them off, it would not do to take chances. High explosives do not always act alike, even under the same given conditions. What might with perfect safety be done at one time, could not be repeated at another. Tom knew this, and was ...
— Tom Swift and his Giant Cannon - or, The Longest Shots on Record • Victor Appleton

... and pointed out, in contrast, the musical quality of the drum. This may seem somewhat strange, accustomed as we are to think of the drum as a purely rhythmical instrument. The sounds given out by it seem at best vague in tone and more or less uniform in quality. We forget that all instruments of percussion, as they are called, are direct descendants of the drum. The bells that hang in our church towers are but modifications of the drum; for what is a bell but a metal drum with one end left open and the ...
— Critical & Historical Essays - Lectures delivered at Columbia University • Edward MacDowell

... complained greatly to one of the natives accompanying them of the difficulty of walking through the deep sand. "Ah," he answered, "it's nothing to the trouble I have walking on your city-sidewalks." To save the feet from the effects of violent percussion and uneven surfaces, they must be protected by thick soles, and thick soles require strong upper-leather. When the foot is wedged into one of these casings, a new boot, a struggle begins between them, ...
— Atlantic Monthly, Volume 11, Issue 67, May, 1863 • Various

... eternal snow, where the goatherd, the hunter of the chamois, and the outlaw-smuggler are alone accustomed to venture; amidst precipices where to slip a foot is death; beneath glaciers from which the percussion of a musket-shot is often sufficient to hurl an avalanche; across bottomless chasms caked over with frost ...
— The History of Napoleon Buonaparte • John Gibson Lockhart


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