resonance (redirected from Resonances)

resonance /res·o·nance/ (rez´o-nins)

1. the prolongation and intensification of sound produced by transmission of its vibrations to a cavity, especially such a sound elicited by percussion.

2. a vocal sound heard on auscultation.

3. the existence of organic chemical structures that can not be accurately represented by a single structural formula, the actual formula lying intermediate between several possible representations differing only in electron position.

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amphoric resonance  an auscultatory sound like that produced by blowing over the mouth of an empty bottle.

nuclear magnetic resonance  a measure, by means of applying an external magnetic field to a solution in a constant radiofrequency field, of the magnetic moment of atomic nuclei to determine the structure of organic compounds; the technique is used in magnetic resonance imaging.

skodaic resonance  increased percussion resonance at the upper part of the chest, with flatness below it.

tympanitic resonance 

1. the percussion sound heard on an abdomen with tympanites.

2. the drumlike reverberation of a cavity full of air.

vocal resonance  (VR) the sound of ordinary speech as heard through the chest wall.

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res·o·nance (rz-nns)

n.

1. The sound produced by diagnostic percussion of the normal chest.

2. Intensification of vocal tones during articulation, as by the air cavities of the mouth and nasal passages.

3. Intensification and prolongation of sound produced by sympathetic vibration.

4. The property of a compound having simultaneously the characteristics of two or more structural forms that differ only in the distribution of electrons.

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resonance (rez´nns),

n the vibratory response of a body or air-filled cavity to a frequency imposed on it.

resonance, speech,

n the resonance of the body cavities and surfaces involved in the production of speech. The sound waves produced at the vocal folds are still far from the finished product heard in speech. The resonators give the characteristic quality to the voice. The resonating structures are the air sinuses; organ surfaces; cavities such as the pharynx, oral cavity, and nasal cavity; and chest wall. The resonating structures contribute no energy to the stream of air; they act to conserve and concentrate the energy already present in the laryngeal tone rather than to let it dissipate into the tissues. However, the resonated laryngeal tone still is not speech.

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resonance

1. the prolongation and intensification of sound produced by transmission of its vibrations to a cavity, especially such a sound elicited by percussion. Decrease of resonance is called dullness; its increase, flatness.

2. a vocal sound heard on auscultation.

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amphoric resonance

a sound resembling that produced by blowing over the mouth of an empty bottle.

skodaic resonance

increased percussion resonance at the upper part of the chest, with flatness below it.

tympanic resonance

drumlike reverberation of a cavity filled with air.

tympanitic resonance

the peculiar sound elicited by percussing a tympanitic abdomen.

vesicular resonance

normal pulmonary resonance.

vocal resonance

the sound of ordinary speech as heard through the chest wall.