Of or relating to hot water.
Having to do with hot water; esp., having to do with the action of hot water in producing minerals and springs or in dissolving, shifting, and otherwise changing the distribution of minerals in the earth's crust.
Webster's New World
Of or relating to the rocks, ore deposits, and springs produced by such emanations.
Origin of Hydrothermal
hydro- + thermal
Hydrothermal Is Also Mentioned In
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