: 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
Jill Robbins, Southern Living, 16 Apr. 2025
Hyaluronic acid hydrates, vitamin B5 plumps, and niacinamide diminishes the look of hyperpigmentation over time.
—Annie Blackman, Allure, 9 Apr. 2025
Jenny Berg, Vogue, 22 Mar. 2025
Infused with hyaluronic acid and peptides to hydrate and plump the skin, the full coverage concealer also has optimal diffusion powder.
—Jenny Berg, Vogue, 22 Mar. 2025
See All Example Sentences for hydrate
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Noun
Wear light, breathable fabrics, pack sunscreen, and hydrate—and no, margaritas don’t count.
—Jill Robbins, Southern Living, 16 Apr. 2025
Hyaluronic acid hydrates, vitamin B5 plumps, and niacinamide diminishes the look of hyperpigmentation over time.
—Annie Blackman, Allure, 9 Apr. 2025
Verb
The formula also delivers skin-care benefits over time, harnessing hyaluronic acid, argan oil, and botanical extracts to hydrate, smooth, and brighten the skin after about four weeks of consistent use.
—Jenny Berg, Vogue, 22 Mar. 2025
Infused with hyaluronic acid and peptides to hydrate and plump the skin, the full coverage concealer also has optimal diffusion powder.
—Jenny Berg, Vogue, 22 Mar. 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 20 Apr. 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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