Medical Definition of hydration
1: the act or process of combining or treating with water: asa: the introduction of additional fluid into the body <hydration sometimes helps to reduce the concentration of toxic substances in the tissues>b: a chemical reaction in which water takes part with the formation of only one product <hydration of ethylene to ethyl alcohol>; especially : a reaction in which water takes part in the form of intact molecules
2: the quality or state of being hydrated; especially : the condition of having adequate fluid in the body tissues
Learn More about hydration
Seen and Heard
What made you want to look up hydration? Please tell us where you read or heard it (including the quote, if possible).