hydration
noun
hy·dra·tion
| \ hī-ˈdrā-shən
\
\
Medical Definition of hydration
1
: the act or process of combining or treating with water: as
a
: 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