| PTAT | pure tone average threshold |
|---|---|
| ST | esotropia; scala tympani; scaphotrapezoid; sclerotherapy; sedimentation time; semitendinosus; sensor... |
| TD | tabes dorsalis; tardive dyskinesia; T-cell dependent; temporary disability; terminal device; tetanus... |
| TDT | terminal deoxynucleotidyltransferase; thermal death time; tone decay test; tumor doubling time |
| TONE | tilted optimized nonsaturating excitation |
| PTA | Pure tone average |
|---|---|
| TONE | tilted optimised nonsaturating excitation |
| percussion | 1. The act of percussing, or striking one body against another; forcible collision, especially. 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." (Shak) 3. <medicine> 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 interventing substance, as a pleximeter, is, used, it is called mediate. Center of percussion. See 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 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. Origin: L. Percussio: cf. F. Percussion. See Percuss. Source: Websters Dictionary (01 Mar 1998) |
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| percussion sound | Any sound elicited on percussing over one of the cavities of the body. (05 Mar 2000) |
| percussion wave | The main positive wave of an arterial pulse tracing. (05 Mar 2000) |
| clavicular percussion | Percussion, usually direct, along the entire clavicle to demonstrate dullness, particularly in apical pulmonary tuberculosis. (05 Mar 2000) |
| piano percussion | Examination for dullness by striking the chest wall directly with the fingertips of one hand successively, beginning with the fifth finger. Synonym: piano percussion. (05 Mar 2000) |
| Murphy's percussion | Examination for dullness by striking the chest wall directly with the fingertips of one hand successively, beginning with the fifth finger. Synonym: piano percussion. (05 Mar 2000) |
| deep percussion | Heavy percussion to obtain information about deeply situated organs or structures. (05 Mar 2000) |
| direct percussion | The striking of the part under examination directly with the finger or a plessor, without the intervention of another finger or plessimeter. Synonym: direct percussion. (05 Mar 2000) |
| immediate percussion | The striking of the part under examination directly with the finger or a plessor, without the intervention of another finger or plessimeter. Synonym: direct percussion. (05 Mar 2000) |
| threshold percussion | Percussion effected by means of a glass rod as a plessimeter, the rod being inclined to the wall of the chest or abdomen and touching it only by one extremity. (05 Mar 2000) |
| finger percussion | Percussion in which a finger of one hand is used as a plessimeter and one of the other hand as a plessor. (05 Mar 2000) |