: 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
Emily Cegielski, Flow Space, 6 Mar. 2025
The Swiss skincare import creates sophisticated formulations featuring pure alpine ingredients from high altitude plants and Triple DNA, a patented marine DNA extract that deeply hydrates and boosts cell renewal.
—Bea McMonagle, Forbes, 28 Feb. 2025
Kiana Murden, Vogue, 13 Mar. 2025
Available in eight scents including Mango Mojo, Vanilla Velvet and more, its new $20 Power Essence Body & Hair Fragrance Mists are infused with hyaluronic acid, niacinamide and panthenol in an aim to hydrate skin and strands.
—Noor Lobad, WWD, 11 Mar. 2025
See All Example Sentences for hydrate
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Noun
This ultra-nourishing, antioxidant-rich face oil deeply hydrates and replenishes skin, leaving you with a dewy, youthful radiance—without hormone-disrupting toxins.
—Emily Cegielski, Flow Space, 6 Mar. 2025
The Swiss skincare import creates sophisticated formulations featuring pure alpine ingredients from high altitude plants and Triple DNA, a patented marine DNA extract that deeply hydrates and boosts cell renewal.
—Bea McMonagle, Forbes, 28 Feb. 2025
Verb
Dove’s is a classic formulated with gentle cleansers and the brand’s moisturizing cream to hydrate the skin while maintaining the natural moisture barrier.
—Kiana Murden, Vogue, 13 Mar. 2025
Available in eight scents including Mango Mojo, Vanilla Velvet and more, its new $20 Power Essence Body & Hair Fragrance Mists are infused with hyaluronic acid, niacinamide and panthenol in an aim to hydrate skin and strands.
—Noor Lobad, WWD, 11 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 23 Mar. 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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