: 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 Han, Allure, 3 Jan. 2025
With 43 inclusive shades and a luxurious formula that hydrates and smooths, the Dior Backstage Foundation is a go-to choice for anyone seeking a polished yet natural look.
—Emily Cegielski, Flow Space, 26 Nov. 2024
Kiana Murden, Vogue, 10 Jan. 2025
While there’s limited research on the effects of castor oil for psoriasis, the oil may help hydrate the skin, strengthen the skin barrier to help prevent infection, relieve symptoms, and promote healing.
—Lindsay Curtis, Health, 5 Jan. 2025
See all Example Sentences for hydrate 
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Noun
This Korean sunscreen essential soothes acne and excess sebum using niacinamide and hydrates skin with hyaluronic acid.
—Sarah Han, Allure, 3 Jan. 2025
With 43 inclusive shades and a luxurious formula that hydrates and smooths, the Dior Backstage Foundation is a go-to choice for anyone seeking a polished yet natural look.
—Emily Cegielski, Flow Space, 26 Nov. 2024
Verb
It’s also made up of 40% water, which helps to keep the skin hydrated.
—Kiana Murden, Vogue, 10 Jan. 2025
While there’s limited research on the effects of castor oil for psoriasis, the oil may help hydrate the skin, strengthen the skin barrier to help prevent infection, relieve symptoms, and promote healing.
—Lindsay Curtis, Health, 5 Jan. 2025
See all Example Sentences for hydrate
Dictionary Entries Near hydrate
Cite this Entry
“Hydrate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrate. Accessed 20 Jan. 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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