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A hot spring that discharges intermittent jets of steam and water is called a geyser. Geysers are generally associated with recent volcanic activity. They are produced by the heating of underground waters that have come into contact with, or are very close to, magma. Geyser discharges as high as 1,600 ft (500 m) have been recorded, but 160 ft (50 m) is much more common. Occasionally, a geyser will adopt an extremely regular and predictable pattern of intermittent activity and discharge for a few minutes every hour or so (for example, Old Faithful in Yellowstone National Park).
Examples of geyser in a Sentence
Saul Elbein, The Hill, 24 Apr. 2025
Much like oil and gas, geothermal energy, which harnesses the planet’s molten core to make steam, had long been confined to the places where access came easy—the American West, where Yellowstone’s famous geysers hint at the heat below, or volcanic Iceland.
—Alexander C. Kaufman, The Atlantic, 4 Apr. 2025
Guests can also explore the park's famous geothermal wonders, including its iconic geysers.
—Shelby Knick, Forbes, 11 Mar. 2025
Roth has in recent years hit the horror convention circuit, where he’s seen engagement rise like a geyser of blood from decapitated heads.
—Borys Kit, The Hollywood Reporter, 14 Mar. 2025
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Cite this Entry
“Geyser.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/geyser. Accessed 2 May. 2025.
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geyser
noun
from Icelandic Geyser "a hot spring in Iceland," from geysa "to rush forth"
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