Hypertext Webster Gateway: "Fulgurite"
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.
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