noun
hydration
high-DRAY-shn/haɪˈdreɪʃn/
The process of adding water to or incorporating water into something.
Drinking the clear water supplies the older man's body with needed hydration.

Etymology
The water root connects hydration to hydrate, whose meaning expanded from chemical combination with water to restoring moisture. The noun names that process or its resulting state, here having enough water in the body.
In context
hydration isn't about how much water you drink hydration is more about the quality of water and what you put in your water
More examples
- The recipe allows extra time for hydration of the whole-grain flour.
- Hydration of cement starts a chemical reaction that helps concrete harden.
- Stir as you add water to ensure even hydration of the powder.
Forms
hydrate verb — To add water to or incorporate water into something.
Similar words
- moistening
- Emphasizes adding enough water to make something slightly wet.
- wetting
- Focuses on making a surface wet rather than incorporating water.