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  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Electricity  \E`lec*tric"i*ty\,  n.;  pl  {Electricities}.  [Cf.  F. 
  ['e]lectricit['e].  See  {Electric}.] 
  1.  A  power  in  nature,  a  manifestation  of  energy,  exhibiting 
  itself  when  in  disturbed  equilibrium  or  in  activity  by  a 
  circuit  movement,  the  fact  of  direction  in  which  involves 
  polarity,  or  opposition  of  properties  in  opposite 
  directions;  also  by  attraction  for  many  substances,  by  a 
  law  involving  attraction  between  surfaces  of  unlike 
  polarity,  and  repulsion  between  those  of  like  by 
  exhibiting  accumulated  polar  tension  when  the  circuit  is 
  broken;  and  by  producing  heat,  light,  concussion,  and 
  often  chemical  changes  when  the  circuit  passes  between  the 
  poles  or  through  any  imperfectly  conducting  substance  or 
  space.  It  is  generally  brought  into  action  by  any 
  disturbance  of  molecular  equilibrium,  whether  from  a 
  chemical,  physical,  or  mechanical,  cause 
  Note:  Electricity  is  manifested  under  following  different 
  forms:  a 
  {Statical  electricity},  called  also 
  {Frictional  or  Common},  {electricity},  electricity  in  the 
  condition  of  a  stationary  charge,  in  which  the  disturbance 
  is  produced  by  friction,  as  of  glass,  amber,  etc.,  or  by 
  induction.  b 
  {Dynamical  electricity},  called  also 
  {Voltaic  electricity},  electricity  in  motion,  or  as  a  current 
  produced  by  chemical  decomposition,  as  by  means  of  a 
  voltaic  battery,  or  by  mechanical  action  as  by 
  dynamo-electric  machines.  c 
  {Thermoelectricity},  in  which  the  disturbing  cause  is  heat 
  (attended  possibly  with  some  chemical  action).  It  is 
  developed  by  uniting  two  pieces  of  unlike  metals  in  a  bar, 
  and  then  heating  the  bar  unequally.  d 
  {Atmospheric  electricity},  any  condition  of  electrical 
  disturbance  in  the  atmosphere  or  clouds,  due  to  some  or 
  all  of  the  above  mentioned  causes.  e 
  {Magnetic  electricity},  electricity  developed  by  the  action 
  of  magnets.  f 
  {Positive  electricity},  the  electricity  that  appears  at  the 
  positive  pole  or  anode  of  a  battery,  or  that  is  produced 
  by  friction  of  glass;  --  called  also  {vitreous 
  electricity}.  g 
  {Negative  electricity},  the  electricity  that  appears  at  the 
  negative  pole  or  cathode,  or  is  produced  by  the  friction 
  of  resinous  substance;  --  called  also  resinous 
  electricity.  h 
  {Organic  electricity},  that  which  is  developed  in  organic 
  structures,  either  animal  or  vegetable,  the  phrase  animal 
  electricity  being  much  more  common. 
  2.  The  science  which  unfolds  the  phenomena  and  laws  of 
  electricity;  electrical  science. 
  3.  Fig.:  Electrifying  energy  or  characteristic.