v. t. [ imp. & p. p. Percussed p. pr. & vb. n. Percussing. ] [ L. percussus, p. p. of percutere; per + quatere to shake, strike. See Quash. ] To strike smartly; to strike upon or against; as, to percuss the chest in medical examination. [ 1913 Webster ]

Flame percussed by air giveth a noise. Bacon. [ 1913 Webster ]

v. i. (Med.) To strike or tap in an examination by percussion. See Percussion, 3. Quain. [ 1913 Webster ]

n. [ L. percussio: cf. F. percussion. See Percuss. ] 1. The act of percussing, or striking one body against another; forcible collision, esp. such as gives a sound or report. Sir I. Newton. [ 1913 Webster ]

2. Hence: The effect of violent collision; vibratory shock; impression of sound on the ear. [ 1913 Webster ]

The thunderlike percussion of thy sounds. Shak. [ 1913 Webster ]

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. [ 1913 Webster ]

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. [ 1913 Webster ]

n. A musical instrument which is played by striking, as a drum, cymbal, or xylophone. [ PJC ]

n. A musician who plays percussion instruments. [ WordNet 1.5 ]

The world-renowned deaf percussionist Evelyn Glennie prefers to be thought of as a percussionist who happens to be deaf. [ PJC ]

a. Striking against; percutient; as, percussive force. [ 1913 Webster ]

v. t. [ imp. & p. p. Repercussed p. pr. & vb. n. Repercussing. ] [ L. repercusus, p. p. of repercutere to drive back; pref. re- re- + percutere. See Percussion. ] To drive or beat back; hence, to reflect; to reverberate. [ 1913 Webster ]

Perceiving all the subjacent country, . . . to repercuss such a light as I could hardly look against. Evelyn. [ 1913 Webster ]

n. [ L. repercussio: cf. F. répercussion. ] 1. The act of driving back, or the state of being driven back; reflection; reverberation; as, the repercussion of sound. [ 1913 Webster ]

Ever echoing back in endless repercussion. Hare. [ 1913 Webster ]

2. (Mus.) Rapid reiteration of the same sound. [ 1913 Webster ]

3. (Med.) The subsidence of a tumor or eruption by the action of a repellent. Dunglison. [ 1913 Webster ]

4. (Obstetrics) In a vaginal examination, the act of imparting through the uterine wall with the finger a shock to the fetus, so that it bounds upward, and falls back again against the examining finger. [ 1913 Webster ]

a. [ Cf. F. répercussif. ] [ 1913 Webster ]

1. Tending or able to repercuss; having the power of sending back; causing to reverberate. [ 1913 Webster ]

Ye repercussive rocks! repeat the sound. W. Pattison. [ 1913 Webster ]

2. Repellent. [ Obs. ] “Blood is stanched by astringent and repercussive medicines.” Bacon. [ 1913 Webster ]

3. Driven back; rebounding; reverberated. “Rages loud the repercussive roar.” Thomson. [ 1913 Webster ]

n. A repellent. [ Obs. ] Bacon. [ 1913 Webster ]