
1) Big shooter 2) Big spout 3) Bloke said something effusive 4) Body of water 5) Eruption source 6) Fountain 7) Geological wonder 8) Geothermal spout 9) Heard bloke in hot spring 10) Hot spot 11) Hot spring 12) Hot-water gusher 13) It blows off steam 14) It regularly blows its top 15) Jet launcher 16) Jet spewer
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https://www.crosswordclues.com/clue/geyser

1) Waterspout
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https://www.crosswordclues.com/clue/geyser

A geyser (ɚ; ə or ə) is a spring characterized by intermittent discharge of water ejected turbulently and accompanied by a vapour phase (steam). The formation of geysers is due to particular hydrogeological conditions, which exist in only a few places on Earth, so they are a fairly rare phenomenon. Generally all geyser field sites are located n...
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http://en.wikipedia.org/wiki/Geyser
[Mars] Martian geysers are putative sites of small-scale jet-like eruptions that occur in the south polar region region of Mars during the spring thaw. `Dark dune spots` and `spiders` are the two most visible types of features ascribed to these eruptions. They are unlike any terrestrial geological phenomenon. The reflectance (albedo), shape...
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http://en.wikipedia.org/wiki/Geyser_(Mars)
[fireboat, 1886] The Geyser was a steam powered fireboat built for Chicago, Illinois in 1886.Chicago had operated three earlier vessels, as fireboats, but they had all been retrofits. The Geyser was specifically designed as a fireboat, after Fire Marshall Denis J. Swenie visited eastern cities to learn from their purpose-built fireboats. Th...
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http://en.wikipedia.org/wiki/Geyser_(fireboat,_1886)
[fireboat, 1889] The Geyser was a steam powered fireboat built for Bay City, Michigan. At the time she was being built, in 1889, it was anticipated that she would be twice as powerful as any other vessel on the Saginaw River. ...
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http://en.wikipedia.org/wiki/Geyser_(fireboat,_1889)

• (n.) A boiling spring which throws forth at frequent intervals jets of water, mud, etc., driven up by the expansive power of steam.
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http://thinkexist.com/dictionary/meaning/geyser/

hot spring that intermittently spouts jets of steam and hot water. The term is derived from the Icelandic word geysir, meaning `to gush.`[4 related articles]
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http://www.britannica.com/eb/a-z/g/27

Castle Geyser erupts water and steam, Yellowstone National Park, Wyoming. Credit: S.R. Brantley / U.S. Geological Survey A hot spring, found in currently or recently volcanic regions, that intermittently jets superheated water and steam into the air. A geyser consists essentially of a tube lead...
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http://www.daviddarling.info/encyclopedia/G/geyser.html

A natural spring marked by the intermittent escape of hot water and steam.
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http://www.encyclo.co.uk/local/22291

A hot spring that intermittently erupts a spray of steam and hot water. Caused by the heating of gro
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http://www.encyclo.co.uk/local/22392
Gey'ser noun [ Icelandic
geysir , from
geysa to rush furiously, from
gjōsa to gush. Confer
Gush .] A boiling spring which throws forth at frequent intervals jets of water, mud, etc., driven up by the expansive power of steam. »
Geysers were first known i...
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http://www.encyclo.co.uk/webster/G/24

A thermal spring that intermittently erupts steam and boiling water.
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http://www.evcforum.net/WebPages/Glossary_Geology.html

In geography, a geyser (from the Icelandic geysir which in turn deribes from heysa meaning to gush or rush forth) is a term applied to natural springs of hot water of the kind that were first observed in Iceland. The geysers of Iceland, about a hundred in number, lie about 30 miles north west of Mount Hecia, in a plain covered by hot-springs and st...
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http://www.probertencyclopaedia.com/browse/AG.HTM

A hot spring that throws hot water and steam into the air. The heat is thought to result from the contact of groundwater with magma bodies.
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http://www.scientificpsychic.com/etc/geology-glossary.html

fountain that develops when water from a conduit is forced up to the surface of a glacier; also called a negative mill .
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https://nsidc.org/cryosphere/glossary?page=10

A type of hot spring that intermittently erupts jets of material.
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https://pds.jpl.nasa.gov/planets/special/glossary.htm

hot water spring that sprays water periodically
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https://sciencetrek.org/sciencetrek/topics/water/glossary.cfm
verb to overflow like a geyser
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https://www.encyclo.co.uk/local/20974
Click images to enlargeNatural spring that intermittently discharges an explosive column of steam and hot water into the air due to the build-up of steam in underground chambers. One of the most remarkable geysers is Old Faithful, in Yellowstone National Park, Wyoming, USA. Geysers also occur in New Zealand and Icelan...
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https://www.encyclo.co.uk/local/21221

a type of hot spring seen on land that episodically erupts jets of hot water and steam. It results from ground water being heated by coming in contact with hot rock deep in the Earth's crust, and then rising to the surface.
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https://www.encyclo.co.uk/local/21343

A type of thermal spring which ejects water intermittently with considerable force.
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https://www.encyclo.co.uk/local/22327

a geothermal feature of the Earth where there is an opening in the surface that contains superheated water that periodically erupts in a shower of water and steam.
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https://www.encyclo.co.uk/local/22449

A spring that shoots jets of hot water and steam into the air.
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https://www.encyclo.co.uk/local/22831

a spring that discharges hot water and steam
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https://www.vocabulary.com/lists/428173
No exact match found.