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.
It looks like performative hydration, but it’s literally because if I don’t challenge myself to drink water, I just won’t drink water at all.
From Los Angeles Times ● Sep. 14, 2026
"There were hampers, cakes and hydration drinks. It was really, really nice, a little bit of fuel for the guys coming back from a long shift," he said.
From BBC ● Sep. 9, 2026
Yet, there isn’t a lot of good research on hydration, says Stavros Kavouras, founding director of Arizona State University’s Hydration Science Lab in Phoenix and DrHydration on social media.
From The Wall Street Journal ● Aug. 27, 2026
If venues are air conditioned, are FIFA’s hydration breaks necessary?
From Los Angeles Times ● Aug. 10, 2026
It’s the end of June, and Grandpa Ed will soon be meeting her midway during the warmer weather, just to refuel her hydration.
From "A Heart in a Body in the World" by Deb Caletti
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Get a wordDefinitions 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.
