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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
Graham Averill, Outside Online, 20 June 2025
Additionally, once the boat lands after the ride’s 84-foot drop, guests will be welcomed with a loud roar and an explosion of new water geysers.
—Todd Martens, Los Angeles Times, 17 June 2025
The video shows the steaming pool bubble ever so slightly before a bulb of steam and black mud shoots up from the geyser.
—Brooke Baitinger, Sacbee.com, 4 June 2025
Notice visitors, none of whom seem to be wearing a dress, are distanced from the geyser on a boardwalk — and using their phones to record the eruption.
—Addy Bink, The Hill, 17 May 2025
See All Example Sentences for geyser
Cite this Entry
“Geyser.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/geyser. Accessed 11 Jul. 2025.
Copy CitationKids Definition
geyser
noun
from Icelandic Geyser "a hot spring in Iceland," from geysa "to rush forth"
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