hydration

hydrate +‎ -ion

• (US) IPA^(key): /haɪˈdɹeɪʃən/
• Rhymes: -eɪʃən

hydration (usually uncountable, plural hydrations)

1. (chemistry) the incorporation of water molecules into a complex with those of another compound
2. (biology) the process of providing an adequate amount of water to body tissues
3. (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.

• hydrate

• hydration on Wikipedia.Wikipedia