Definition of "hydration"

(chemistry) The incorporation of water molecules into a complex with those of another compound.  examples

(biology) The process of providing an adequate amount of water to body tissues.

(construction) The chemical reaction by which a substance (such as cement) combines with water, giving off heat to form a crystalline structure in its setting and hardening.  examples

(object-oriented programming) The process of populating an object with data loaded from a data source.  examples

(web design) Client-side rendering of pre-rendered static server data, e.g. to make dynamic web pages.  examples