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Definition of hydration

hydration

/haɪˈdreɪ.ʃən/
hy · dra · tion
Plural:hydrations
•
Adjective:hydrational
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hydration Lexical Profile

hydration Game Scores & Validity

• noun

1

The process of absorbing or providing adequate water and fluids to a living organism or biological tissue to maintain normal physiological function.

Example

"Proper hydration is essential for athletes competing in high temperatures."

2

A chemical reaction in which a substance combines with water, or in which water molecules surround and bind to ions or molecules in a solution.

Example

"The hardening of Portland cement relies on the exothermic hydration of calcium silicates."

Synonyms
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Antonyms
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• Rhymes for hydration

• Nearby Words

hydrant
hydrate
hydrated
hydration
hydrator
hydraulic
hydraulically

Word Origin & Etymology

Coined in the early 19th century as a scientific term from the verb 'hydrate' plus the noun suffix '-ion', ultimately rooted in the Ancient Greek 'hydor' (water).

Cite this Entry

Wordmom. (2026). Definition of Hydration. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/hydration
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