Resonance

[rez* ’-o-nans) [re, again; sonare, to sound]. I. The sound obtained on striking a hollow object, especially the note obtained on percu ing the chest or abdomen. 2. The sound of the voice as transmitted to the ear applied to the chest. R., Cracked-pot, a sound elicited by percu ing over a pulmonary cavity communicating with a bronchus. R., Skodaic, the increased percu ion-resonance over the upper part of a lung when the lower part is compre ed by a pleural effusion. R., Tympanitic, a hollow sound elicited on percu ion over the intestines and over large pulmonary cavities with thin yielding walls. R., Vesicular, the normal pulmonary R. R., Vesiculotympanitic, an admixture of vesicular and tympanitic R. R., Vocal, the sound heard on auscultation of the chest during ordinary speech. R., Whispering, the sound heard on auscultation of the chest during the act of whispering. 554