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
Stacey Andrade-Wells, chief marketing officer of Unilever’s hydration brand Liquid IV until earlier this month, has resurfaced at the baby formula brand Bobbie.
From The Wall Street Journal ● Aug. 13, 2026
Fifa has claimed the World Cup is "under-monetised", but hydration break adverts, dynamic ticket pricing and record broadcast and sponsorship rights have put the 2026 edition on track to generate record revenues.
From BBC ● Aug. 8, 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
My father has always stressed the importance of diversification, and I like to think that I’ve acquired a diversified portfolio from my hydration business—a portfolio I plan to turn for a profit on eBay.
From "Dry" by Neal Shusterman and Jarrod Shusterman
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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.
