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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.