English Dictionary

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hydration (haɪˈdreɪʃən) 



  1. the act or process of hydrating
  2. the state or quality of being hydrated

hydrate (ˈhaɪdreɪt Pronunciation for hydrate



  1. a chemical compound containing water that is chemically combined with a substance and can usually be expelled without changing the constitution of the substance
  2. a chemical compound that can dissociate reversibly into water and another compound. For example sulphuric acid (H2SO4) dissociates into sulphur trioxide (SO3) and water (H2O)
  3. (not in technical usage) a chemical compound, such as a carbohydrate, that contains hydrogen and oxygen atoms in the ratio two to one


  1. to undergo or cause to undergo treatment or impregnation with water

Derived Forms

hyˈdration noun
ˈhydrator noun

Word Origin

C19: from hydro- + -ate1

Example Sentences Including 'hydration'

"We are confident this compromise will restore nutrition and hydration to Mrs Schiavo as long as that appeal endures, "DeLay said.
SA Star (2005)
In patients without shock, oral hydration should be started early.
British Medical Journal (2002)
It will soften his attitude towards you as well as aid him in hydration.
Irish Times (2002)
Thus she, with Gosling's assistance, demonstrated the easy, reversible hydration of DNA.
Brenda Maddox ROSALIND FRANKLIN (2002)


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