hydrothermal
adjective
hy·dro·ther·mal
ˌhī-drə-ˈthər-məl 
: of or relating to hot water
—used especially of the formation of minerals by hot solutions rising from a cooling magma
Examples of hydrothermal in a Sentence
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One of these is the Lost City, a vast hydrothermal field at the bottom of the Atlantic—a kind of unique prehistoric hotbed of massive, dramatic chimney spires venting chemical reactions that scientists have been studying for clues to how life on Earth (and other planets) began.
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Bonnie Tsui, Time, 15 Sep. 2025
This large number of people, combined with the park’s frequently high winds, means that personal items often are blown into the park’s hydrothermal areas.
—Owen Clarke, Outside, 11 Sep. 2025
Using computer models, researchers simulated Ceres' interior over billions of years and found that, between 2.5 and 4 billion years ago, radioactive decay in the dwarf planet's rocky core could have generated enough heat to drive hydrothermal activity.
—Sharmila Kuthunur, Space.com, 26 Aug. 2025
Stable isotopic signatures of oxygen and hydrogen observed in the country rocks next to dike segments can provide independent evidence for hydrothermal fluid flow, altering the chemical composition of the rocks or delaying the cooling of the dikes and country rocks.
—David Bressan, Forbes.com, 31 July 2025
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Bonnie Tsui, Time, 15 Sep. 2025
This large number of people, combined with the park’s frequently high winds, means that personal items often are blown into the park’s hydrothermal areas.
—Owen Clarke, Outside, 11 Sep. 2025
Using computer models, researchers simulated Ceres' interior over billions of years and found that, between 2.5 and 4 billion years ago, radioactive decay in the dwarf planet's rocky core could have generated enough heat to drive hydrothermal activity.
—Sharmila Kuthunur, Space.com, 26 Aug. 2025
Stable isotopic signatures of oxygen and hydrogen observed in the country rocks next to dike segments can provide independent evidence for hydrothermal fluid flow, altering the chemical composition of the rocks or delaying the cooling of the dikes and country rocks.
—David Bressan, Forbes.com, 31 July 2025
See All Example Sentences for hydrothermal
Cite this Entry
“Hydrothermal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrothermal. Accessed 22 Sep. 2025.
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