Definition of hydrous in English:


Pronunciation /ˈhīdrəs/ /ˈhaɪdrəs/


Chemistry Geology
  • Containing water as a constituent.

    ‘a hydrous lava flow’
    • ‘Limonite is not a mineral species as such, but rather a mixture of amorphous hydrous iron oxides.’
    • ‘Because zeolites form in hydrous environments, typically through alteration of igneous rocks, they may ultimately be found on Mars, if liquid water did once exist on that planet.’
    • ‘More likely, however, is that any water would become incorporated in the rock through formation of hydrous minerals as the reaction fronts advance.’
    • ‘The aqueducts provided public baths with hydrous spectacles and private houses with running water and flush toilets.’
    • ‘These are a revelation: virtually weightless, plain cylinders that dispense their deliciously light, hydrous formulations cleanly and efficiently.’
    fluid, flowing, running


Early 19th century from Greek hudro- ‘water’+ -ous.