: 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
Sarah Felbin, Allure, 20 May 2026
Forbes Travel Guide Recommended Banyan Tree Club & Spa Seoul focuses on a full-body reset with tension-relieving massage and hydrating wraps.
—Melinda Sheckells, Forbes.com, 20 May 2026
Take a look at the ingredients list for lightweight oils and butters, soothing aloe vera, and hydrating ceramides.
—Ariana Yaptangco, Glamour, 18 May 2026
The formula is designed to hydrate and smooth strands while boosting softness and shine for a healthier-looking finish.
—Toni Sutton, PEOPLE, 16 May 2026
See All Example Sentences for hydrate
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Verb
Its highly hydrating formula is packed with glycerin and betaine, a humectant that pulls moisture into the skin.
—Sarah Felbin, Allure, 20 May 2026
Forbes Travel Guide Recommended Banyan Tree Club & Spa Seoul focuses on a full-body reset with tension-relieving massage and hydrating wraps.
—Melinda Sheckells, Forbes.com, 20 May 2026
Take a look at the ingredients list for lightweight oils and butters, soothing aloe vera, and hydrating ceramides.
—Ariana Yaptangco, Glamour, 18 May 2026
The formula is designed to hydrate and smooth strands while boosting softness and shine for a healthier-looking finish.
—Toni Sutton, PEOPLE, 16 May 2026
See All Example Sentences for hydrate
Cite this Entry
“Hydrate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrate. Accessed 21 May. 2026.
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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