hydration
Americannoun
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the act or process of supplying water to oneself, another person, or a part of the body.
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the act or process of chemically hydrating something.
Explanation
Hydration is what happens when something absorbs water. If your favorite plant is brown and droopy, it may need hydration — or it may be time to buy a new plant! Hydration comes from the verb hydrate, which was originally defined as "form a hydrate" (a chemical compound that includes water), but eventually came to also mean "to restore moisture." Whenever you moisten or add water to something, including drinking a nice big cold glass of water when you're thirsty, that's hydration.
Vocabulary lists containing hydration
Physical Education - Introductory
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Physical Education - Middle School and High School
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hydr, hydro
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Yellow Wood Partners said the brands it’s acquiring lead in high-growth categories like hydration, gut health and immunity.
From The Wall Street Journal ● Sep. 1, 2026
Monitor the color or your urine, Eisenman adds, which is a good indicator of your hydration level.
From Los Angeles Times ● Jul. 31, 2026
And where are the sponsored hydration breaks—have the college sports pooh-bahs learned nothing from the dark lords of FIFA?
From The Wall Street Journal ● Jul. 30, 2026
That followed a series of Uefa announcements making clear it would not follow Fifa policy on controversial issues including dynamic ticket pricing and hydration breaks.
From BBC ● Jul. 29, 2026
We both needed hydration, but I couldn’t stomach taking in river water, not after what the last gulpful had done to Otto.
From "Endangered" by Eliot Schrefer
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
