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hydrate a compound that contains water in chemical combination. [2 definitions]
hydride an inorganic compound, such as sodium hydride, containing hydrogen and a second usu. electropositive element or group.
hydro- water. [2 definitions]
hydroid characteristic of the asexual hydrozoan polyp. [2 definitions]
hydrolyte a substance that has gone through the process of hydrolysis.
hydrometer an instrument, usu. a sealed glass tube containing a graduated scale and weighted at one end, used to measure the specific gravity of liquids.
hydrophyte a plant that grows in water alone or in esp. wet ground.