a compound formed by the chemical combination of water and some other substance in a definite molecular ratio: plaster of Paris, 2CaSOHO, is a hydrate
Origin of hydratehydr(o)- + -ate
, -·drat·ed, -·drat·ing
- to become or cause to become a hydrate
- to combine with water
- to moisturize (the skin)
- to drink water or other liquid or administer a liquid to (a patient) in an effort to prevent or treat dehydration
A solid compound containing water molecules combined in a definite ratio as an integral part of the crystal. Often used in combination: pentahydrate
verbhy·drat·ed, hy·drat·ing, hy·drates
- To rehydrate.
- To supply water to (a person, for example) in order to restore or maintain fluid balance: “Cold water is the fastest and safest way to hydrate an ordinary athlete” (Jane E. Brody).
To become a hydrate.
(third-person singular simple present hydrates, present participle hydrating, simple past and past participle hydrated)