: 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
Maggie Horton, PEOPLE, 26 Sep. 2025
Moisturize Afterwards An important step in caring for your skin after exfoliation is moisturizing and hydrating your skin.
—Sherri Gordon, Health, 26 Sep. 2025
My last recommendation is hydrating and getting a good night’s rest.
—Essence, 26 Sep. 2025
Zucchini is a light and hydrating summer squash, while winter varieties like butternut squash are more nutrient-dense and filling.
—Morgan Pearson, Verywell Health, 24 Sep. 2025
See All Example Sentences for hydrate
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Verb
It’s made with hydrating ingredients like hyaluronic acid and vitamin E, and it can even be paired with your favorite lip balm or gloss — without staining the applicator — for an extra boost of moisture.
—Maggie Horton, PEOPLE, 26 Sep. 2025
Moisturize Afterwards An important step in caring for your skin after exfoliation is moisturizing and hydrating your skin.
—Sherri Gordon, Health, 26 Sep. 2025
My last recommendation is hydrating and getting a good night’s rest.
—Essence, 26 Sep. 2025
Zucchini is a light and hydrating summer squash, while winter varieties like butternut squash are more nutrient-dense and filling.
—Morgan Pearson, Verywell Health, 24 Sep. 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 30 Sep. 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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