hydrothermal

adjective

hy·​dro·​ther·​mal ˌhī-drə-ˈthər-məl How to pronounce hydrothermal (audio)
: of or relating to hot water
used especially of the formation of minerals by hot solutions rising from a cooling magma
hydrothermally adverb

Examples of hydrothermal in a Sentence

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Together, this is strong evidence that the pool formed as a result of a hydrothermal explosion. Owen Clarke, Outside Online, 21 July 2025 An imaging technique that produces more precise maps of the large reservoirs of magma under the park shows large pods of deep magma leading up to more shallow ones closer to the surface in the northeast, which tie into the park’s famed hydrothermal systems. Elizabeth Weise, USA TODAY, 1 Jan. 2025 Some of the rocks the rover has encountered may have been formed by hydrothermal systems, Horgan said. Ashley Strickland, CNN, 10 Dec. 2024 While rare, hydrothermal explosions can result in injuries or death to humans and animals. Michael Cappetta, Travel + Leisure, 19 July 2025 See All Example Sentences for hydrothermal

Word History

Etymology

International Scientific Vocabulary

First Known Use

1849, in the meaning defined above

Time Traveler
The first known use of hydrothermal was in 1849

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Cite this Entry

“Hydrothermal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrothermal. Accessed 21 Aug. 2025.

Medical Definition

hydrothermal

adjective
hy·​dro·​ther·​mal ˌhī-drə-ˈthər-məl How to pronounce hydrothermal (audio)
: of or relating to hot water
hydrothermally adverb
Last Updated: - Updated example sentences
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