: 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
Kate Kassin, Bon Appetit Magazine, 14 Nov. 2025
Dunagan suggests arriving a few minutes early, hydrating beforehand and avoiding a heavy meal so your body can relax and rest more comfortably.
—Daryl Austin, USA Today, 13 Nov. 2025
Cover, and refrigerate for 30 minutes to hydrate the dough.
—Sabrina Weiss, PEOPLE, 13 Nov. 2025
Another major benefit of lactic acid is its ability to hydrate skin.
—Georgia Day, Vogue, 13 Nov. 2025
See All Example Sentences for hydrate
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Verb
Youth to the People packs in all those green superfoods, plus ingredients like glycerin and vitamin E, into a cleanser that feels incredibly refreshing and hydrating on the skin and smells like a bouquet of herbs.
—Kate Kassin, Bon Appetit Magazine, 14 Nov. 2025
Dunagan suggests arriving a few minutes early, hydrating beforehand and avoiding a heavy meal so your body can relax and rest more comfortably.
—Daryl Austin, USA Today, 13 Nov. 2025
Cover, and refrigerate for 30 minutes to hydrate the dough.
—Sabrina Weiss, PEOPLE, 13 Nov. 2025
Another major benefit of lactic acid is its ability to hydrate skin.
—Georgia Day, Vogue, 13 Nov. 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 18 Nov. 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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