: 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
Isabel Garcia, PEOPLE, 12 Dec. 2025
Our top pick overall was the Medicube Triple Collagen Cream because its affordable and its potent formula blends collagen with hyaluronic acid and shea butter to deeply hydrate.
—Deanna Pai, Glamour, 11 Dec. 2025
Look for hydrating creams, serums or masks that soothe the skin and support regeneration.
—Maria Goldbach, Vogue, 10 Dec. 2025
Water signs opt for foods that are hydrating and soothing to their nervous system— meals that comfort them and feel like a warm hug.
—Samantha Mims, Essence, 10 Dec. 2025
See All Example Sentences for hydrate
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Verb
Start with the textured side to exfoliate, then use the other to hydrate and soothe.
—Isabel Garcia, PEOPLE, 12 Dec. 2025
Our top pick overall was the Medicube Triple Collagen Cream because its affordable and its potent formula blends collagen with hyaluronic acid and shea butter to deeply hydrate.
—Deanna Pai, Glamour, 11 Dec. 2025
Look for hydrating creams, serums or masks that soothe the skin and support regeneration.
—Maria Goldbach, Vogue, 10 Dec. 2025
Water signs opt for foods that are hydrating and soothing to their nervous system— meals that comfort them and feel like a warm hug.
—Samantha Mims, Essence, 10 Dec. 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 14 Dec. 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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