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.
WSJ | Buy Side: These durable and stylish reusable water bottles are great as everyday hydration accessories and gym companions.
From The Wall Street Journal ● Jul. 27, 2026
I decided to talk to some experts and conduct my own personal hydration experiment to find out whether the claims are legitimate or basically all bull.
From Los Angeles Times ● Jul. 27, 2026
Austin arrives inside the stadium by the game’s first hydration break, scanning the VIP lounge for a Coca-Cola.
From The Wall Street Journal ● Jul. 18, 2026
In addition to strong ratings, the inclusion of hydration breaks during games allowed TV partners to add commercial breaks, which are usually not included in global soccer matches.
From MarketWatch ● Jul. 17, 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.
