volcanic glass
noun
: natural glass produced by the cooling of molten lava too rapidly to permit crystallization
Examples of volcanic glass in a Sentence
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Other hazards include Pele's hair -- strands of volcanic glass often produced by lava fountaining activity -- crater wall instability, ground cracking and rockfalls.
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Julia Jacobo, ABC News, 20 June 2025
Additional hazards include Pele's hair (strands of volcanic glass often produced by lava fountaining activity) and other volcanic fragments that can fall on the ground within a few hundred yards of the eruptive vents, the USGS said.
—CBS News, 12 June 2025
This curious form of volcanic glass forms when liquid lava is thrown into the air during eruptions.
—Erik Klemetti, Discover Magazine, 12 May 2025
Large plagioclase feldspar crystals can be seen below the hornblende, all embedded in a matrix of volcanic glass and feldspar crystals.
—Erik Klemetti, Discover Magazine, 25 Mar. 2025
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Julia Jacobo, ABC News, 20 June 2025
Additional hazards include Pele's hair (strands of volcanic glass often produced by lava fountaining activity) and other volcanic fragments that can fall on the ground within a few hundred yards of the eruptive vents, the USGS said.
—CBS News, 12 June 2025
This curious form of volcanic glass forms when liquid lava is thrown into the air during eruptions.
—Erik Klemetti, Discover Magazine, 12 May 2025
Large plagioclase feldspar crystals can be seen below the hornblende, all embedded in a matrix of volcanic glass and feldspar crystals.
—Erik Klemetti, Discover Magazine, 25 Mar. 2025
See All Example Sentences for volcanic glass
Cite this Entry
“Volcanic glass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/volcanic%20glass. Accessed 21 Jul. 2025.
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