ful·​gu·​rite ˈfu̇l-g(y)ə-ˌrīt How to pronounce fulgurite (audio)
: an often tubular vitrified crust produced by the fusion of sand or rock by lightning

Examples of fulgurite in a Sentence

Recent Examples on the Web The photo does not show a fulgurite. Kate S. Petersen, USA TODAY, 22 July 2022 That means the lightning strikes initiate a geological stopwatch the moment a fulgurite is created. Nikk Ogasa, Science | AAAS, 16 Dec. 2020 If the soil composition is right, something called a fulgurite can also be created — fused soil that looks like coral. Joaquin Palomino, San Francisco Chronicle, 26 Jan. 2018

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'fulgurite.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


International Scientific Vocabulary, from Latin fulgur

First Known Use

1823, in the meaning defined above

Time Traveler
The first known use of fulgurite was in 1823

Dictionary Entries Near fulgurite

Cite this Entry

“Fulgurite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fulgurite. Accessed 2 Mar. 2024.

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