: 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 Sep. 2025
Olay Regenerist Micro-Sculpting Cream The cream is formulated with skin-nourishing ingredients, like niacinamide to brighten the skin and strengthen its moisture barrier, amino peptides to firm and sculpt, and hydrating hyaluronic acid to plump fine lines and wrinkles.
—Alicia Geigel, Southern Living, 11 Sep. 2025
Add it to plain sparkling water for a tasty, refreshing, hydrating boost.
—Lauren O'Connor, Health, 11 Sep. 2025
From glow-boosting serums to hydrating moisturizers, these skin saviors deliver real results.
—Jackie Fields, People.com, 9 Sep. 2025
See All Example Sentences for hydrate
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Verb
They’re formulated with hydrating ingredients designed to decrease puffiness and help with dark circles.
—Isabel Garcia, PEOPLE, 12 Sep. 2025
Olay Regenerist Micro-Sculpting Cream The cream is formulated with skin-nourishing ingredients, like niacinamide to brighten the skin and strengthen its moisture barrier, amino peptides to firm and sculpt, and hydrating hyaluronic acid to plump fine lines and wrinkles.
—Alicia Geigel, Southern Living, 11 Sep. 2025
Add it to plain sparkling water for a tasty, refreshing, hydrating boost.
—Lauren O'Connor, Health, 11 Sep. 2025
From glow-boosting serums to hydrating moisturizers, these skin saviors deliver real results.
—Jackie Fields, People.com, 9 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 14 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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