a tubelike formation in sand or rock, caused by lightning.

Origin of fulgurite

1825–35; < Latin fulgur (see fulgurate) + -ite1
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Examples from the Web for fulgurite

Historical Examples of fulgurite

  • This fulgurite, which is extremely light, measures six centimetres in length.

    Thunder and Lightning

    Camille Flammarion

British Dictionary definitions for fulgurite



a tube of glassy mineral matter found in sand and rock, formed by the action of lightning

Word Origin for fulgurite

C19: from Latin fulgur lightning
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

fulgurite in Science


[fulgyə-rīt′, -gə-]

A slender, usually tubular body of glassy rock produced by lightning striking and then fusing dry sandy soil.
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