/huy'dreuh therr"meuhl/, adj. Geol.
noting or pertaining to the action of hot, aqueous solutions or gases within or on the surface of the earth.
[1840-50; HYDRO-1 + THERMAL]

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Universalium. 2010.

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  • hydrothermal — hydrothermal, ale, aux [ idrotɛrmal, o ] adj. • 1866; de hydro et thermal ♦ Didact. Qui se rapporte aux eaux thermales; qui résulte de l action des eaux thermales. Source hydrothermale. Minéral hydrothermal, formé à partir des minéraux présents… …   Encyclopédie Universelle

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