Resonance \Res"o*nance\ (r?z"?-nans), n. [Cf. F. r['e]sonance,
L. resonantia an echo.]
1. The act of resounding; the quality or state of being
resonant.
2. (Acoustics) A prolongation or increase of any sound,
either by reflection, as in a cavern or apartment the
walls of which are not distant enough to return a distinct
echo, or by the production of vibrations in other bodies,
as a sounding-board, or the bodies of musical instruments.
Pulmonary resonance (Med.), the sound heard on percussing
over the lungs.
Vocal resonance (Med.), the sound transmitted to the ear
when auscultation is made while the patient is speaking.
Source: Webster's Revised Unabridged Dictionary (1913)
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