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)

Keep scrolling for more

Did You Know?

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.
See More

Recent Examples on the Web

Ear Spring isn’t the first dormant geyser to come to life this year. Fox News, "Long-dormant Yellowstone hot spring erupts," 22 Sep. 2018 Rosetta captured this moment as dramatic geysers shot out from the comet 67P/Churyumov–Gerasimenko—the first close observations of this phenomenon. Jay Bennett, Popular Mechanics, "The Rosetta Comet-Chaser's Insanely Delicate Approach, Explained," 23 Dec. 2016 The film implies that seismic geopolitical changes take a physical toll on the bodies of the marginalized, one that manifests onscreen in the bone-cracking agony of dance and ultimately erupts in geysers of blood. Aja Romano, Vox, "How Suspiria turns the color red into a plot point," 9 Nov. 2018 Back in 2014, the Hubble Space Telescope captured something astonishing on Europa, one of Jupiter’s biggest moons: a massive geyser-like plume that appeared to spurt from the moon’s icy crust. Jason Daley, Smithsonian, "A New Look at Old Data Suggests Europa Shoots Watery Plumes Into Space," 14 May 2018 Two seasonal park workers were fired after being caught on a webcam urinating on the geyser in 2009. Mead Gruver, The Seattle Times, "Man who walked near boiling-hot Old Faithful geyser ticketed," 17 Sep. 2018 As long as geysers are treated like garbage cans there remains the possibility of a trash eruption. Sam Blum, Popular Mechanics, "Heavily Littered Yellowstone Geyser Spews Tons of Trash Into Air During Eruption," 5 Oct. 2018 If confirmed, these icy geysers would provide a sample of the subsurface ocean. Amina Khan,, "Strange readings from a dead spacecraft reveal new evidence of water on Europa," 15 May 2018 Ear Spring geyser, located in Yellowstone National Park, had long been engorged by years of trash left inside of it by ill-mannered tourists. Sam Blum, Popular Mechanics, "Heavily Littered Yellowstone Geyser Spews Tons of Trash Into Air During Eruption," 5 Oct. 2018

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.

See More

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

Keep scrolling for more

Learn More about geyser

Dictionary Entries near geyser








Statistics for geyser

Last Updated

20 Feb 2019

Look-up Popularity

Time Traveler for geyser

The first known use of geyser was in 1780

See more words from the same year

Keep scrolling for more

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
British : 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

Keep scrolling for more

More from Merriam-Webster on geyser

Rhyming Dictionary: Words that rhyme with geyser

Spanish Central: Translation of geyser

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

Comments on geyser

What made you want to look up geyser? Please tell us where you read or heard it (including the quote, if possible).


to reflect, repel, echo, or resound

Get Word of the Day daily email!

Test Your Vocabulary

Original Meanings Quiz

  • rembrandt-painting-a-young-scholar-and-his-tutor
  • Which of the following is the earliest known sense of the word awe?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Syn City

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!