[gahy-zer, -ser for 1, 3; gee-zer for 2]


a hot spring that intermittently sends up fountainlike jets of water and steam into the air.
British Informal. a hot-water heater, as for a bath.

verb (used without object)

to spew forth as or like a geyser: the kettle geysering all over the stove.

Origin of geyser

1755–65; < Icelandic Geysir name of a hot spring in Iceland, literally, gusher, derivative of geysa to gush
Related formsgey·ser·al, gey·ser·ic, adjective
Can be confusedcaldera fumarole geyser volcano Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for geyser

gusher, spout, jet

Examples from the Web for geyser

Contemporary Examples of geyser

Historical Examples of geyser

British Dictionary definitions for geyser



a spring that discharges steam and hot water
British a domestic gas water heater

Word Origin for geyser

C18: from Icelandic Geysir, from Old Norse geysa to gush
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for geyser

1780, from Icelandic Geysir, name of a hot spring in the valley of Haukadal, literally "the gusher," from Old Norse geysa "to gush," from Proto-Germanic *gausjan, from PIE *gheus-, from root *gheu- "to pour" (see found (v.2)).

Online Etymology Dictionary, © 2010 Douglas Harper

geyser in Science



A natural hot spring that regularly ejects a spray of steam and boiling water into the air.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.