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
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But recent moon missions and moon analyses indicate that water molecules are spread throughout the moon’s surface, frozen and unfrozen, mixed into the soil, stashed inside volcanic glasses and mineral grains, and concentrated in minuscule granules. Sam Walters, Discover Magazine, 25 Dec. 2024 Additional hazards include lightweight volcanic glass fragments that can fall downwind of the fissure vents, potentially causing skin and eye irritation within a few hundred meters of the vents. Josh Hammer, Newsweek, 23 Dec. 2024 Continuing excavations within the ancient city of Pompeii have revealed the remains of a man and a woman within a small bedroom buried by ash and volcanic glass in AD 79 from the eruption of Mount Vesuvius. Ashley Strickland, CNN, 17 Aug. 2024 Join 5 others in the comments View Comments The ancient Greco-Roman city of Pompeii was buried under ash and volcanic glass during the eruption of Mount Vesuvius in 79 C.E. and since the 1700s, archeologists have been unearthing the city that’s been frozen in time. Amarachi Orie, CNN, 11 Apr. 2024 See all Example Sentences for volcanic glass 

Word History

First Known Use

1780, in the meaning defined above

Time Traveler
The first known use of volcanic glass was in 1780

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 4 Jan. 2025.

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