hy·​dro·​ther·​mal | \ ˌhī-drə-ˈthər-məl How to pronounce hydrothermal (audio) \

Definition of hydrothermal

: of or relating to hot water used especially of the formation of minerals by hot solutions rising from a cooling magma

Other Words from hydrothermal

hydrothermally \ ˌhī-​drə-​ˈthər-​mə-​lē How to pronounce hydrothermal (audio) \ adverb

Examples of hydrothermal in a Sentence

Recent Examples on the Web During this time, the researchers focused on mapping the seafloor, exploring tectonic processes, measuring heat flow, sampling microbes, and geophysics of the hydrothermal vents in the Gulf, a statement reports. Elizabeth Gamillo, Smithsonian Magazine, 22 Nov. 2021 In a series of papers published in the journal Science on October 8, Lauretta and a team of researchers discovered that Bennu contained a cosmic prize: thick veins of organic minerals called carbonates, which form in hydrothermal systems. Amy Thompson, Smithsonian Magazine, 6 Nov. 2020 Yellowstone officials caution visitors that the ground in hydrothermal areas is fragile and thin, with scorching water just below. Aya Elamroussi, CNN, 6 Oct. 2021 There are around 10,000 hydrothermal features in Yellowstone, more than 500 of which are geysers, according to the park service. NBC News, 7 Oct. 2021 Yellowstone has more than 10,000 hydrothermal features, including geysers and hot springs, that can be as hot as nearly 200 degrees Fahrenheit, according to the US Geological Survey. Aya Elamroussi, CNN, 6 Oct. 2021 Yellowstone's expansive size, 140 lakes, hydrothermal and geologic sites, incredible views, and lots of activity options put the park at a score of 55 out of a possible 100. Andrea Romano, Travel + Leisure, 27 May 2021 The hydrogen may be produced by the deep-sea hydrothermal vents on the moon's seafloor, in a similar way that may have started life on Earth as well, reports Mike Wall Space.com. Elizabeth Gamillo, Smithsonian Magazine, 9 July 2021 This suggested that hydrothermal vents might be present. Suzanne Oconnell, The Conversation, 22 June 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hydrothermal.' 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 hydrothermal

1849, in the meaning defined above

History and Etymology for hydrothermal

International Scientific Vocabulary

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Time Traveler

The first known use of hydrothermal was in 1849

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Dictionary Entries Near hydrothermal



hydrothermal vent

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Last Updated

30 Nov 2021

Cite this Entry

“Hydrothermal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrothermal. Accessed 9 Dec. 2021.

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More Definitions for hydrothermal


hy·​dro·​ther·​mal | \ ˌhī-drə-ˈthər-məl How to pronounce hydrothermal (audio) \

Medical Definition of hydrothermal

: of or relating to hot water

Other Words from hydrothermal

hydrothermally \ -​mə-​lē How to pronounce hydrothermal (audio) \ adverb


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