Fulgurite definition

fo͝olgyə-rīt, -gə-, fŭl-
A slender, usually tubular body of glassy rock produced by lightning striking and then fusing dry sandy soil.
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A glassy substance, usually tube-shaped, formed by fusion when sand, rock, etc. are struck by lightning.
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A slender, usually tubular body of glassy rock produced by lightning striking and then fusing dry sandy soil.
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Glass formed by a lightning strike melting sand or other material.
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Other Word Forms

Noun

Singular:
fulgurite
Plural:
fulgurites

Origin of fulgurite

  • Latin fulgur lightning fulgurate –ite

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Wiktionary