gey·​ser | \ ˈgī-zər How to pronounce geyser (audio) , British also ˈgē-zə, for sense 1 and usually ˈgē-zə for sense 2 \

Definition of geyser

1 : a spring that throws forth intermittent jets of heated water and steam
2 British : an apparatus for heating water rapidly with a gas flame (as for a bath)

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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

The water from the geyser rises as high as 75 feet. geysers rising as high as 75 feet The water shot into the sky in an enormous geyser.
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Recent Examples on the Web Between 1040 and 1100, Sunset Crater blasted a geyser of molten rock and ash. Roger Naylor, The Arizona Republic, 26 Aug. 2021 Images posted to social media showed a geyser of water visible at a considerable distance and water covering the grounds of Stern Grove this week. Dominic Fracassa, San Francisco Chronicle, 25 Aug. 2021 At present, the area where the geyser is has no trees due to the hot, alkaline-rich discharge from it. Chris Ciaccia, Fox News, 15 Oct. 2020 But the pandemic pause — and the subsequent geyser of Marvel content on Disney Plus — may have damaged those hopes. Washington Post, 20 July 2021 The changing climate could affect some of the park’s most iconic sites, including Old Faithful, a geyser famous for erupting at regular intervals. From Usa Today Network And Wire Reports, USA TODAY, 24 June 2021 About 6 miles away, hot ash began spewing from the ground in a colossal geyser. Ned Rozell, Anchorage Daily News, 22 May 2021 Behind the geyser of capital is a confluence of forces. Scott Patterson, WSJ, 22 May 2021 Among them is Old Faithful, the world-famous geyser that erupts about 17 times a day. Meena Thiruvengadam, Travel + Leisure, 7 May 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'geyser.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of geyser

1780, in the meaning defined at sense 1

History and Etymology for geyser

Icelandic Geysir, hot spring in Iceland, from geysa to rush forth, from Old Norse; akin to Old English gēotan to pour — more at found

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Last Updated

8 Sep 2021

Cite this Entry

“Geyser.” Dictionary, Merriam-Webster, Accessed 22 Sep. 2021.

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More Definitions for geyser



English Language Learners Definition of geyser

: a hole in the ground that shoots out hot water and steam also : the column of water and steam that comes from a geyser
: a device for heating water in a bathroom or kitchen


gey·​ser | \ ˈgī-zər How to pronounce geyser (audio) \

Kids Definition of geyser

: a spring that now and then shoots up hot water and steam

More from Merriam-Webster on geyser

Thesaurus: All synonyms and antonyms for geyser

Nglish: Translation of geyser for Spanish Speakers Encyclopedia article about geyser


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