1. the process of providing water to something or absorbing water
2. the state of having adequate water content in the body
Usage: medical; health
3. a chemical reaction in which water combines with another substance
Usage: chemistry

Examples

• Proper hydration is essential for athletic performance.
• The doctor emphasized the importance of hydration during illness.
• Skin hydration can be improved with moisturizing lotions.
• Athletes monitor their hydration levels during training.
• The hydration of cement is a crucial step in construction.
• Dehydration occurs when hydration is inadequate.
• The nurse checked the patient’s hydration status.