3  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  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. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Resonance  \Res"o*nance\,  n. 
  An  electric  phenomenon  corresponding  to  that  of  acoustic 
  resonance,  due  to  the  existance  of  certain  relations  of  the 
  capacity,  inductance,  resistance,  and  frequency  of  an 
  alternating  circuit. 
 
  From  WordNet  r  1.6  [wn]: 
 
  resonance 
  n  1:  an  excited  state  of  a  stable  particle  causing  a  sharp 
  maximum  in  the  probability  of  absorption  of 
  electromagnetic  radiation 
  2:  a  vibration  of  large  amplitude  produced  by  a  relatively 
  small  vibration  near  the  same  frequency  of  vibration  as 
  the  natural  frequency  of  the  resonating  system 
  3:  having  the  character  of  a  loud  deep  sound  [syn:  {plangency}, 
  {reverberance},  {ringing},  {sonorousness},  {sonority},  {vibrancy}] 

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