Fulgurite

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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.


     [1913 Webster]