: a compound formed by the union of water with some other substance
hydrated; hydrating
1
: to cause to take up or combine with water or the elements of water
2
: to supply with ample fluid or moisture
hydrates and softens the skin
: to become a hydrate
Examples of hydrate in a Sentence
Verb
lotions and creams that hydrate the skin
Drink fluids to hydrate the body.
Recent Examples on the Web
Kristin Canning, SELF, 8 May 2025
The gel mask does so with three types of collagen, working in tandem with a thoughtful blend of supportive ingredients like hydroxyproline, collagen amino acids, hyaluronic acid, peptides, and squalane for a well-rounded formula that not only firms, but hydrates, soothes, and plumps.
—Kiana Murden, Vogue, 21 Mar. 2025
Stacia Datskovska, Footwear News, 22 May 2025
Originating from Korea, butter skin is about making your complexion look as smooth and satiny as the kitchen staple by using a combination of hydrating skin-care and creamy-makeup products.
—Sophia Panych, Allure, 20 May 2025
See All Example Sentences for hydrate
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Noun
Green tea extract soothes and hydrates, to fight wrinkles with less irritation.
—Kristin Canning, SELF, 8 May 2025
The gel mask does so with three types of collagen, working in tandem with a thoughtful blend of supportive ingredients like hydroxyproline, collagen amino acids, hyaluronic acid, peptides, and squalane for a well-rounded formula that not only firms, but hydrates, soothes, and plumps.
—Kiana Murden, Vogue, 21 Mar. 2025
Verb
Well, Look Even Better Myth: That hot-at-Sephora skin salve will hydrate your skin and reverse years of damage caused by a bad diet and lackluster hygiene habits.
—Stacia Datskovska, Footwear News, 22 May 2025
Originating from Korea, butter skin is about making your complexion look as smooth and satiny as the kitchen staple by using a combination of hydrating skin-care and creamy-makeup products.
—Sophia Panych, Allure, 20 May 2025
See All Example Sentences for hydrate
Cite this Entry
“Hydrate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrate. Accessed 29 May. 2025.
Copy CitationKids Definition
hydrate
1 of 2 noun
hy·drate
ˈhī-ˌdrāt 
: a compound formed by the union of water with some other substance
a hydrate of copper sulfate
hydrate
2 of 2 verb
hydrated; hydrating
1
: to cause to take up or combine with water or the elements of water
2
: to supply with sufficient amounts of fluid or moisture
Medical Definition
hydrate
1 of 2 noun
hy·drate
ˈhī-ˌdrāt
: a compound (as Glauber's salt) formed by the union of water with some other substance
hydrate
2 of 2 verb
hydrated; hydrating
: to cause to take up or combine with water or the elements of water
: to become a hydrate
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