[hahy-druh-thur-muh l]

adjective Geology.

noting or pertaining to the action of hot, aqueous solutions or gases within or on the surface of the earth.

Nearby words

  1. hydrosyringomyelia,
  2. hydrotaxis,
  3. hydrotheca,
  4. hydrotherapeutics,
  5. hydrotherapy,
  6. hydrothermal vent,
  7. hydrothionemia,
  8. hydrothionuria,
  9. hydrothorax,
  10. hydrotropic

Origin of hydrothermal

First recorded in 1840–50; hydro-1 + thermal

Related formshy·dro·ther·mal·ly, adverb

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for hydrothermal

British Dictionary definitions for hydrothermal



of or relating to the action of water under conditions of high temperature, esp in forming rocks and minerals
Derived Formshydrothermally, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for hydrothermal



1852, from hydro- + thermal (adj.); 1855 in geology.

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for hydrothermal



Relating to or produced by hot water, especially water heated underground by the Earth's internal heat.Hydrothermal energy is power that is generated using the Earth's hot water.
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