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

Examples of hydrothermal in a Sentence

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The spacecraft also discovered icy plumes of water erupting from Saturn's moon Enceladus, revealing new clues into that moon's subsurface ocean of liquid water, complete with hydrothermal events like those found in Earth's oceans. — Tariq Malik, Space.com, 15 Oct. 2026 Some of the amenities include a yoga room with classes available to guests throughout the week (except Sundays), a 24-hour gym, and a spa equipped with a sauna, cold plunge, and hydrothermal circuit. — Nikkita Nair, Condé Nast Traveler, 7 Oct. 2026 Microbes have only been found to colonize eight of the 70 underwater impact craters with hydrothermal activity. — Elizabeth Rayne, ArsTechnica, 30 Sep. 2026 Circ’s hydrothermal recycling process is designed to separate polyester and cellulose in blended textiles without sacrificing either component. — Alexandra Harrell, Footwear News, 26 Aug. 2026 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

Phrases Containing hydrothermal

Rhymes for hydrothermal

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Browse Nearby Words

hydrotherapy
hydrothermal
hydrothermal vent
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Cite this Entry

“Hydrothermal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrothermal. Accessed 20 Oct. 2026.

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Medical Definition

hydrothermal

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