Definition of fulgurite in English:

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Pronunciation: /ˈfʌlɡjʊrʌɪt/


[mass noun] Geology
1Vitreous material formed of sand or other sediment fused by lightning.
Example sentences
  • The clay-soil class of fulgurite, recently discovered in the eastern gold fields of Western Australia, was described as subaerial irregular masses of black glass hosted by clayey soil.
  • Perhaps once this class of exogenic fulgurite becomes better known, a greater number or variety of occurrences will be recognized instead of overlooked.
  • At the discovery outcrop, the black glass-lined effusion crater with its glassy tendrils marks the transition from subterranean fulgurite tubes to exogenic styles of formation.
1.1 [count noun] A piece of fulgurite.
Example sentences
  • A 10-foot fulgurite is being prepared for display in the lobby of UF's new engineering building.
  • Most people have never seen a fulgurite, and many that have probably did not realize what it was at the time.
  • After thunderstorms on the Florida coasts beach combers find fulgurite in the sands.


Mid 19th century: from Latin fulgur 'lightning' + -ite1.

For editors and proofreaders

Line breaks: ful¦gur|ite

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