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fulgurite


fulgurite


  1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Fulgurite  \Ful"gu*rite\,  n.  [L.  fulguritus  p.  p.  of  fulgurire 
  to  strike  with  lightning,  fr  fulgur  lightning:  cf  F. 
  fulgurite.] 
  A  vitrified  sand  tube  produced  by  the  striking  of  lightning 
  on  sand;  a  lightning  tube;  also  the  portion  of  rock  surface 
  fused  by  a  lightning  discharge.