volcanic glass
noun
: natural glass produced by the cooling of molten lava too rapidly to permit crystallization
Examples of volcanic glass in a Sentence
Recent Examples on the Web
Analysis of the sample found volcanic glass beads in the lunar regolith that have been dated to 123 million years ago, give or take 15 million years.
—
Keith Cooper, Space.com, 3 Feb. 2025
While lava flows remain confined to the Kīlauea summit caldera, the eruption produces hazards such as volcanic gas emissions, vog (volcanic smog) and Pele's hair—a type of volcanic glass—that can pose health risks and environmental challenges.
—Jonathan Granoff, Newsweek, 28 Jan. 2025
The long, thin strands that resemble hair are actually volcanic glass, according to the U.S. Geological Survey’s Hawaiian Volcano Observatory.
—Sara Schilling, Sacramento Bee, 28 Jan. 2025
Pele's hair—strands of volcanic glass produced by lava fountains and carried by the wind—is another hazard associated with eruptions at Kīlauea.
—John Yoo and John Shu, Newsweek, 23 Jan. 2025
See all Example Sentences for volcanic glass 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Keith Cooper, Space.com, 3 Feb. 2025
While lava flows remain confined to the Kīlauea summit caldera, the eruption produces hazards such as volcanic gas emissions, vog (volcanic smog) and Pele's hair—a type of volcanic glass—that can pose health risks and environmental challenges.
—Jonathan Granoff, Newsweek, 28 Jan. 2025
The long, thin strands that resemble hair are actually volcanic glass, according to the U.S. Geological Survey’s Hawaiian Volcano Observatory.
—Sara Schilling, Sacramento Bee, 28 Jan. 2025
Pele's hair—strands of volcanic glass produced by lava fountains and carried by the wind—is another hazard associated with eruptions at Kīlauea.
—John Yoo and John Shu, Newsweek, 23 Jan. 2025
See all Example Sentences for volcanic glass
Dictionary Entries Near volcanic glass
Cite this Entry
“Volcanic glass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/volcanic%20glass. Accessed 17 Feb. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share