pyroclastic

adjective

py·​ro·​clas·​tic ˌpī-rō-ˈkla-stik How to pronounce pyroclastic (audio)
: formed by or involving fragmentation as a result of volcanic or igneous action

Examples of pyroclastic in a Sentence

Recent Examples on the Web Several other cities in the area, including the wealthy enclave of Herculaneum, were fried by clouds of hot gas called pyroclastic pulses and flows. Jennifer Ouellette, Ars Technica, 5 Feb. 2024 Alas, the couple's luck ran out on June 3, 1991, when they were killed by a massive pyroclastic flow from the eruption of Mount Unzen in Japan. Jennifer Ouellette, Ars Technica, 17 Jan. 2023 The agency also detected three pyroclastic density currents – hot, fast-moving flows of ash, hot gases and debris that rush down volcanic slopes – and warned of possible ashfall on the south side of the volcano. Kathleen Magramo, CNN, 12 June 2023 The pyroclastic flow deposits created the Valley of 10,000 Smokes named for the fumaroles (gas vents) formed as the flows cooled. 7. Erik Klemetti, Discover Magazine, 30 May 2023 Once the eruption happened, half of that 1000 cubic kilometers spilled out away from the area as pyroclastic flows while the other half fell into the caldera formed by the collapse of the land during the eruption. Erik Klemetti, Discover Magazine, 20 Sep. 2023 Residents should also be practicing vigilance against pyroclastic density currents, hot flows of ash and debris that can travel at speeds of hundreds of meters per second, and sediment-laden streamflows, volcano experts said. Julia Jacobo, ABC News, 14 June 2023 Each time the volcano exploded, hot gas and volcanic matter (called pyroclastic flow) burst into the ocean. Emilie Le Beau Lucchesi, Discover Magazine, 6 June 2023 Local communities near the caldera could experience additional hazardous phenomena such as ballistics (flying rocks) or pyroclastic flows, impacting infrastructure and disrupting air travel, the Alaska Volcano Observatory (AVO) said. Camille Fine, USA TODAY, 19 Apr. 2023

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

Word History

First Known Use

1862, in the meaning defined above

Time Traveler
The first known use of pyroclastic was in 1862

Dictionary Entries Near pyroclastic

Cite this Entry

“Pyroclastic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pyroclastic. Accessed 23 Apr. 2024.

Last Updated: - Updated example sentences
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