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

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Other Words from hydrothermal

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

Examples of hydrothermal in a Sentence

Recent Examples on the Web

Magnesite naturally forms in a few ways, like hydrothermal metamorphism, where the presence of water at high temperature and pressures changes magnesium-rich rocks like peridotte. David Grossman, Popular Mechanics, "Scientists Can Now Make a Carbon-Trapping Mineral in a Lab," 15 Aug. 2018 And since the boron likely got into the seafloor plates through hydrothermal reactions with seawater, the diamonds’ color is—coincidentally but truthfully—an oceanic blue. Scott K. Johnson, Ars Technica, "Blue diamonds come from ocean floor that is pushed nearly to Earth’s core," 1 Aug. 2018 Like Enceladus, Europa is thought to have hydrothermal activity on the ocean floor and plumes erupting into space, so this moon is the target of NASA's next flagship mission to the outer solar system. Jay Bennett, Popular Mechanics, "Saturn's Moon Enceladus Is Spewing Complex Organic Molecules Into Space," 27 June 2018 Gangidine and his team routinely travel to Yellowstone to trek into the park’s hydrothermal fields—grassy plains pocketed with gassy geologic features—and collect samples. Ula Chrobak, Outside Online, "This Scientist Learns About Life on Mars in Yellowstone," 18 June 2018 Three things are said to indicate that a super volcano is about to erupt: increased seismic activity, increased ground deformation and changes in the hydrothermal system or increased gas outlet at the surface. Candace Sutton, Fox News, "Quakes and eruptions spark talks of Yellowstone super volcano," 7 May 2018 This would be exciting because only two things make methane on Earth: hydrothermal systems and similar hot forms of geology; and microbes. The Economist, "Seasonal changes in Mars’s air are probably not signs of life. Probably," 7 June 2018 Explore the Hydrothermal Areas: Boiling pools, steam rising from the ground, bubbling mud pots – these are just some of the types of hydrothermal areas that can be found within Lassen Volcanic National Park. Susan B. Barnes, USA TODAY, "Lassen Volcanic National Park: 10 tips for your visit," 29 Apr. 2018 The surreal colors come from the sulphur, potash, and other minerals that saturate the Dallol hydrothermal field. Laura Mallonee, WIRED, "Unreal Views of the Trippy Colors in Ethiopia's Danakil Desert," 15 May 2018

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

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Last Updated

13 Mar 2019

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Time Traveler for hydrothermal

The first known use of hydrothermal was in 1849

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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 hydrothermally (audio) \ adverb

More from Merriam-Webster on hydrothermal

Rhyming Dictionary: Words that rhyme with hydrothermal

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